CN105095330B - A kind of file format recognition methods and system based on compressed package content - Google Patents
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- 238000000034 method Methods 0.000 title claims abstract description 32
- 230000006835 compression Effects 0.000 claims abstract description 20
- 238000007906 compression Methods 0.000 claims abstract description 20
- 239000000284 extract Substances 0.000 claims abstract description 7
- 230000006837 decompression Effects 0.000 claims description 13
- 238000005516 engineering process Methods 0.000 abstract description 7
- 238000000605 extraction Methods 0.000 abstract description 4
- 230000007547 defect Effects 0.000 abstract description 2
- 238000007619 statistical method Methods 0.000 abstract 1
- 230000000875 corresponding effect Effects 0.000 description 14
- 230000001149 cognitive effect Effects 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 241000700605 Viruses Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
Abstract
The invention discloses a kind of file format recognition methods based on compressed package content, including feature extraction phases and file identification stage, feature extraction phases obtain compressed package type file, and extract file name all in compressed package type file, pass through statistical analysis, obtain the signature identification of every kind of compressed package format, and form feature database, the file identification stage obtains file to be identified, judge whether file to be identified is compression Packet type, obtain the All Files title for including in the file to be identified of compression Packet type, these file names are matched with the feature in feature database, the file format of Final Report file to be identified.The invention also provides a kind of document format recognition systems based on compressed package content, compensate for existing format identification technology and are only shown as compressed package files when identifying compressed package type file, and cannot accurately identify the defect of specific compressed package format.
Description
Technical field
The present invention relates to filed of network information security more particularly to a kind of file format identification sides based on compressed package content
Method and system.
Background technique
Format identification technology is the important basic technology of technical field of network information safety, and format identification looks into virus
It kills, the booster action for carrying out having very big of the follow-up works such as Hole Detection.There are two types of currently used format identification technologies, a kind of
It is the identification based on suffix, another kind is the identification based on file format magic.Based on file format suffix identification technology, if
There is no file suffixes or suffix to be modified, is then difficult accurately to identify the format of file to be identified.Based on tray
It is current main file format recognition methods that formula magic, which knows method for distinguishing, and this method is for using compressed package as carrier type
File format, such as office paper series format, APK file format be helpless, and it is unreal that these files carry out file format
The result of art identification is generally only to be identified as compressed package.At present the file using compressed package as carrier have office paper series,
Pdf document, APK file etc., these files are all very common files, and at present without occurring carrying out essence to these files
The technology of true format identification.
Summary of the invention
The defect accurately identified using compressed package as the file format of carrier, the present invention cannot be mentioned for the prior art
A kind of file format recognition methods and system based on compressed package content out.Compressed package type file is collected first as training number
According to all total comprising one or more in the compressed package type file of same format after being decompressed to compressed package type file
The filename of some files, these shared files can be obtained as the signature identification of corresponding compressed package type file format
The signature identification of all compressed package type file formats into training data, by itself and corresponding compressed package type file format shape
At one-to-one relationship and it is organized into feature database, the information for including in feature database is not limited to described above.To text to be identified
When part carries out file format identification, first judge whether file is compression Packet type, is carried out to the file to be identified of compression Packet type
The filename for decompressing and obtaining All Files in compressed package, the filename that will acquire is matched with features described above mark, and is returned
Return accordingly result.
The present invention proposes a kind of file format recognition methods based on compressed package content, comprising:
Compressed package type file is collected, and records file format；
Obtain the file name of All Files in compressed package type file；The compressed package type file includes office system
Column file, pdf document and APK file；
The file name that comparison statistics obtains, obtains filename common in same file format compression Packet type file
Claim, the signature identification of corresponding compressed package type file format is obtained based on shared file name；
The feature database to identify compressed package type file format is generated, includes signature identification and compressed package class in feature database
The information of type file format；
File to be identified is obtained, judges whether file to be identified is compressed package type file, is not known if it is not, then reporting
Not；If so, obtaining the file name for the All Files for including in file to be identified；
The file name that will acquire is matched with the signature identification in feature database, if successful match, according to the spy
Sign identifies the file format that corresponding compressed package type file format information reports file to be identified；If it fails to match, report
It is unidentified.
Further, the corresponding signature identification number of different compressed package type file formats is not less than 1.
It is further, described to judge whether file to be identified is compressed package type file, specifically: it is unreal using file format
Art knows whether method for distinguishing is that compressed package type file judges to file to be identified.
Further, described to obtain the file name of All Files in compressed package type file and obtain in file to be identified
The file name for the All Files for including, specifically: according to different compressed format, to compressed package type file and text to be identified
Part carries out imperfect decompression, and extracts the file name for the All Files that it contains.
The present invention also proposes a kind of document format recognition system based on compressed package content, comprising:
Data acquisition module records file format, and obtain compressed package type file for collecting compressed package type file
The file name of interior All Files；The compressed package type file includes office paper series, pdf document and APK file；
Feature generation module, the file name obtained for comparing statistics obtain same file format compression Packet type text
File name common in part, obtains the signature identification of corresponding compressed package type file format based on shared file name,
The feature database to identify compressed package type file format is generated, includes signature identification and compressed package type file lattice in feature database
The information of formula；
File identification module judges whether file to be identified is compressed package type file for obtaining file to be identified, if
Be not then report it is unidentified, if so, obtaining the file name for the All Files for including in file to be identified；
Format recognizer module, the file name for will acquire are matched with the signature identification in feature database, if matching
Success, then report the file format of file to be identified according to the corresponding compressed package type file format information of the signature identification；
If it fails to match, report unidentified.
Further, the corresponding signature identification number of different compressed package type file formats is not less than 1.
It is further, described to judge whether file to be identified is compressed package type file, specifically: it is unreal using file format
Art knows whether method for distinguishing is that compressed package type file judges to file to be identified.
Further, described to obtain the file name of All Files in compressed package type file and obtain in file to be identified
The file name for the All Files for including, specifically: according to different compressed format, to compressed package type file and text to be identified
Part carries out imperfect decompression, and extracts the file name for the All Files that it contains.
The beneficial effects of the present invention are:
In current existing format identification technology, to using compressed package as the format identification of the compressed package type file of carrier still
It is immature, accurately and effectively file format cannot be identified using file suffixes identification, identified using file format magic
Equal recognition methods, can not accurately confirm the specific file format of compressed package type file, the result usually returned
Compressed package is only identified, but cannot recognize that specific compressed package format.In view of the deficiency of the prior art, of the invention
A kind of file format recognition methods and system based on compressed package content is proposed, solves the compressed package using compressed package as carrier
The identification of type file format compensates for the technical deficiency of existing file format identification.Utilize the compressed package class of all formats
For type file as training data, the obtained characteristic information in feature database is comprehensively and accurate, utilizes the compressed package class of same format
Documentary filename altogether after type file decompression keeps recognition result more accurate as matched signature identification, instructs obtaining
When practicing the All Files for including in data and file to be identified, compressed package type file is carried out in the way of imperfect compression
Decompression, improves decompression rate, effectively saves decompression time, improve recognition efficiency.
Detailed description of the invention
It, below will be to embodiment or the prior art in order to illustrate more clearly of the present invention or technical solution in the prior art
Attached drawing needed in description is briefly described, it should be apparent that, the accompanying drawings in the following description is only in the present invention
The some embodiments recorded for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is that the present invention is based on the feature extracting method flow charts that the file format of compressed package content identifies；
Fig. 2 is that the present invention is based on the cognitive phase method flow diagrams that the file format of compressed package content identifies；
Fig. 3 is that the present invention is based on the system construction drawings that the file format of compressed package content identifies.
Specific embodiment
Technical solution in embodiment in order to enable those skilled in the art to better understand the present invention, and make of the invention
Above objects, features, and advantages can be more obvious and easy to understand, makees with reference to the accompanying drawing to technical solution in the present invention further detailed
Thin explanation.
The embodiment of the method for the file format identification based on compressed package content that The present invention gives a kind of, including feature extraction
Stage and file format cognitive phase, wherein the method flow diagram of feature extraction phases is as shown in Figure 1, comprising:
S101: compressed package type file is collected, and records file format, the compressed package type file includes office system
The file using compressed package as carrier such as column document, PDF document, APK file, the file format include .doc format .docx
The file formats such as format .ppt format .pptx format .pdf format；
S102: obtaining the file name of All Files in compressed package type file, file name including unique file and
The title of file；
S103: the file name that comparison statistics obtains, obtain in same file format compression Packet type file common to
File name obtains the signature identification of corresponding compressed package type file format based on shared file name, such as passes through comparison
It counts, all includes the file of the entitled word of file in .docx file, then filename word can be used as the feature of .docx file
It identifies, all includes the file of the entitled WordDocument of file in .doc file, then filename WordDocument can be used as
.doc the filename of file identifies, and all includes the file of the entitled PowerPoint Document of file in .ppt file, then file
Name PowerPoint Document can be used as the filename mark of .ppt file, and the signature identification is not limited to the example above
Shown in directly substituted with shared filename, be also possible to the spy that the combination of shared filename and other correlated characteristics is formed
Sign；
S104: generating the feature database to identify compressed package type file format, mainly includes signature identification in feature database
With the information of compressed package type file format.
The cognitive phase method flow diagram of file format identification is as shown in Figure 2, comprising:
S201: file to be identified is obtained；
S202: judging whether file to be identified is compressed package type file, if it is not, S207 is then entered step, if so,
S203 is entered step, which belongs to before the process for tentatively identifying file to be identified, such as office2007 version
Office series documentation, if the file of .doc .ppt format is all to be compressed by .msi Packet type compressed, from
The office series documentation of office2007 version till now, such as the file of .docx .pptx format is pressed by .zip
Contracting Packet type is compressed, if file to be identified belongs to the file of .msi compression Packet type, the format of file to be identified is just
It is possible that for the file format in the office series documentation before office2007 version, the compression Packet type of step identification
It is not limited to .msi and .zip；
S203: obtaining the file name for the All Files for including in file to be identified, the file name including unique file
With the title of file；
S204: the file name that will acquire is matched with the signature identification in feature database；
S205: entering step S206 if successful match according to the matching result of S204, if it fails to match, enters step
Rapid S207；
S206: the file of file to be identified is reported according to the corresponding compressed package type file format information of the signature identification
Format；
S207: report is unidentified.
Preferably, the corresponding signature identification number of different compressed package type file formats is not less than 1, for example, passing through statistics
There are two the signature identifications for analyzing obtained APK file, AndroidManifest.xml and classes.dex.
It is preferably, described to judge whether file to be identified is compressed package type file, specifically: utilize file format magic
Know whether method for distinguishing is that compressed package type file judges to file to be identified.
Preferably, described to obtain the file name of All Files in compressed package type file and obtain packet in file to be identified
The file name of the All Files contained, specifically: according to different compressed format, to compressed package type file and file to be identified
Imperfect decompression is carried out, and extracts the file name for the All Files that it contains.
The system construction drawing for the file format identification based on compressed package content that The present invention gives a kind of, as shown in figure 3, packet
It includes:
Data acquisition module 301 records file format, and obtain compression Packet type for collecting compressed package type file
The file name of All Files in file；
Feature generation module 302, the file name obtained for comparing statistics, obtains same file format compression Packet type
File name common in file, obtains the feature mark of corresponding compressed package type file format based on shared file name
Know, generate the feature database to identify compressed package type file format, mainly includes signature identification and compressed package class in feature database
The information of type file format；
File identification module 303 judges whether file to be identified is compression Packet type text for obtaining file to be identified
Part, if it is not, then report it is unidentified, if so, obtaining the file name for the All Files for including in file to be identified；
Format recognizer module 304, the file name for will acquire are matched with the signature identification in feature database, if
With success, then the tray of file to be identified is reported according to the corresponding compressed package type file format information of the signature identification
Formula；If it fails to match, report unidentified.
Preferably, the corresponding signature identification number of different compressed package type file formats is not less than 1.
It is preferably, described to judge whether file to be identified is compressed package type file, specifically: utilize file format magic
Know whether method for distinguishing is that compressed package type file judges to file to be identified.
Preferably, described to obtain the file name of All Files in compressed package type file and obtain packet in file to be identified
The file name of the All Files contained, specifically: according to different compressed format, to compressed package type file and file to be identified
Imperfect decompression is carried out, and extracts the file name for the All Files that it contains.
The embodiment of method is described in a progressive manner in this specification, for the embodiment of system, due to it
It is substantially similar to embodiment of the method, so being described relatively simple, the relevent part can refer to the partial explaination of embodiments of method.
The invention proposes a kind of file format recognition methods and system based on compressed package content, solve using compressed package as carrier
The identification of compressed package type file format compensates for existing file format identification and is only able to display compressed package type file for compression
Packet but cannot accurately provide the deficiency of specific compressed package format.Using the compressed package type file of all formats as training number
According to the obtained characteristic information in feature database is comprehensively and accurate, utilizes being total to after the compressed package type file decompression of same format
Documentary filename keeps recognition result more accurate as matched signature identification, is obtaining training data and text to be identified
When the All Files for including in part, compressed package type file is decompressed in the way of imperfect compression, improves decompression
Rate effectively saves decompression time, improves recognition efficiency.
Although depicting the present invention by embodiment, it will be appreciated by the skilled addressee that the present invention there are many deformation and
Variation is without departing from spirit of the invention, it is desirable to which the attached claims include these deformations and change without departing from of the invention
Spirit.
Claims (8)
1. a kind of file format recognition methods based on compressed package content characterized by comprising
Compressed package type file is collected, and records file format；The compressed package type file include office paper series,
Pdf document and APK file；
Obtain the file name of All Files in compressed package type file；
The file name that comparison statistics obtains, obtains file name common in same file format compression Packet type file,
The signature identification of corresponding compressed package type file format is obtained based on shared file name；
The feature database to identify compressed package type file format is generated, includes signature identification and compression Packet type text in feature database
The information of part format；
File to be identified is obtained, judges whether file to be identified is compressed package type file, if it is not, then reporting unidentified；If
It is then to obtain the file name for the All Files for including in file to be identified；
The file name that will acquire is matched with the signature identification in feature database, if successful match, according to the feature mark
Know the file format that corresponding compressed package type file format information reports file to be identified；If it fails to match, reports and do not know
Not.
2. the method as described in claim 1, which is characterized in that the corresponding signature identification of different compressed package type file formats
Number is not less than 1.
3. the method as described in claim 1, which is characterized in that described to judge whether file to be identified is compression Packet type text
Part, specifically: know whether method for distinguishing is that compressed package type file is sentenced to file to be identified using file format magic number
It is disconnected.
4. the method as described in claim 1, which is characterized in that the file for obtaining All Files in compressed package type file
Title and the file name for obtaining the All Files for including in file to be identified, specifically: according to different compressed format, to pressure
Contracting Packet type file and file to be identified carry out imperfect decompression, and extract the file name for the All Files that it contains.
5. a kind of document format recognition system based on compressed package content characterized by comprising
Data acquisition module records file format, and obtain institute in compressed package type file for collecting compressed package type file
Documentary file name；The compressed package type file includes office paper series, pdf document and APK file；
Feature generation module, the file name that comparison statistics obtains, obtains being total in same file format compression Packet type file
Some file names obtain the signature identification of corresponding compressed package type file format based on shared file name, generate to
It identifies the feature database of compressed package type file format, includes the letter of signature identification and compressed package type file format in feature database
Breath；
File identification module judges whether file to be identified is compressed package type file, if not for obtaining file to be identified
Be then report it is unidentified, if so, obtaining the file name for the All Files for including in file to be identified；
Format recognizer module, the file name for will acquire is matched with the signature identification in feature database, if successful match,
The file format of file to be identified is then reported according to the corresponding compressed package type file format information of the signature identification；If matching
Failure, then report unidentified.
6. system as claimed in claim 5, which is characterized in that the corresponding signature identification of different compressed package type file formats
Number is not less than 1.
7. system as claimed in claim 5, which is characterized in that described to judge whether file to be identified is compression Packet type text
Part, specifically: know whether method for distinguishing is that compressed package type file is sentenced to file to be identified using file format magic number
It is disconnected.
8. system as claimed in claim 5, which is characterized in that the file for obtaining All Files in compressed package type file
Title and the file name for obtaining the All Files for including in file to be identified, specifically: according to different compressed format, to pressure
Contracting Packet type file and file to be identified carry out imperfect decompression, and extract the file name for the All Files that it contains.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107292171A (en) * | 2016-04-13 | 2017-10-24 | 阿里巴巴集团控股有限公司 | Method, method for detecting virus and device for recognizing compressed file subtype |
| CN106844476A (en) * | 2016-12-23 | 2017-06-13 | 上海上讯信息技术股份有限公司 | A kind of method and apparatus for recognizing file format and correspondence integrality |
| CN110020665B (en) * | 2019-02-12 | 2021-06-22 | 北京鑫汇普瑞科技发展有限公司 | Microbial mass spectrometry data analysis method compatible with different flight mass spectrometers |
| CN111159758A (en) * | 2019-12-18 | 2020-05-15 | 深信服科技股份有限公司 | Identification method, device and storage medium |
| CN113051242A (en) * | 2019-12-27 | 2021-06-29 | 北京国双科技有限公司 | Document type identification method, device, equipment and computer readable storage medium |
| CN111352912B (en) * | 2020-03-10 | 2024-04-12 | Oppo广东移动通信有限公司 | Compressed file processing method, device, storage medium, terminal and server |
| CN111552670B (en) * | 2020-04-30 | 2022-10-18 | 福建天晴在线互动科技有限公司 | Method and system for expanding and supporting compressed file and decompressed file |
| CN112580057A (en) * | 2020-12-17 | 2021-03-30 | 光通天下网络科技股份有限公司 | Attack vulnerability detection method, device, equipment and medium for ZIP encrypted compressed packet |
| CN116226046B (en) * | 2023-03-16 | 2023-09-08 | 北京中宏立达科技发展有限公司 | File type detection method and system |
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Address after: 150028 building 7, innovation and entrepreneurship square, science and technology innovation city, Harbin high tech Industrial Development Zone, Heilongjiang Province (No. 838, Shikun Road) Patentee after: Antan Technology Group Co.,Ltd. Address before: 150028 building 7, innovation and entrepreneurship square, science and technology innovation city, Harbin high tech Industrial Development Zone, Heilongjiang Province (No. 838, Shikun Road) Patentee before: Harbin Antian Science and Technology Group Co.,Ltd. |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20211119 Granted publication date: 20190507 Pledgee: Bank of Longjiang Limited by Share Ltd. Harbin Limin branch Pledgor: Harbin Antian Science and Technology Group Co.,Ltd. Registration number: Y2019230000002 |