Malicious PDF — malware analysis report

Static analysis result for SHA-256 67602c88edc02980…

MALICIOUS

PDF

68.8 KB Created: 2009-03-12 09:23:50 +09:00 Authoring application: Word —p Acrobat PDFMaker 7.0.7 (via Acrobat Distiller 7.0.5 (Windows))
MD5: 12aab3743c6726452eb0a91d8190a473 SHA-1: 3091a2afbcfc9bdf17a93547750cc6e4abf8b14b SHA-256: 67602c88edc029808f5d0907b0b0119193968db36e63ed7ce0a13dc324aaa560
188 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1059.007 JavaScript T1566.001 Spearphishing Attachment

The PDF file contains embedded JavaScript that exploits CVE-2009-4324 via the media.newPlayer method. The JavaScript is heavily obfuscated but appears to be designed to download and execute a secondary payload. The ClamAV detection of 'Pdf.Exploit.Agent-11217' further supports the malicious nature of this file.

Machine Learning

  • Nyx PDF Classifier clean score 0.0002

Heuristics 8

  • media.newPlayer — CVE-2009-4324 critical CVE exact CVE_2009_4324
    PDF JavaScript calls media.newPlayer — CVE-2009-4324 is a use-after-free in Adobe Reader's multimedia plugin triggered by media.newPlayer(). Actively exploited as a zero-day in December 2009. (matched in decompressed stream)
  • ClamAV: Pdf.Exploit.Agent-11217 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-11217
  • Secondary embedded PDF body has suspicious static findings high POLYGLOT_CHILD_PDF_STATIC_TRIAGE
    A valid PDF body was found at a nonzero offset inside another container and its carved contents matched PDF exploit or lure heuristics. This catches polyglots where the top-level magic routes to ZIP/OLE while a PDF reader or downstream parser opens the hidden PDF payload.
  • JavaScript action low PDF_JAVASCRIPT
    PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • Optional Content Group with action trigger low PDF_OPTIONAL_CONTENT
    Optional Content Group (layer) co-occurs with an action trigger — content can be selectively hidden from viewers or scanners while the action still fires on open
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/pdfx/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/photoshop/1.0/
    • https://www.verisign.com/repository/CPS��
    • https://www.verisign.com
    • https://www.verisign.com/repository/verisignlogo.gif0��
    • https://www.verisign.com/CPS0b
    • http://www.microsoft.com/typography
    • http://www.iec.ch

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0006_000.js
5b4167bcb3c75912d04b9dd356202c4c9c23e78c3ed0bd677479589d60bcd5a0		 pdf-javascript-stream PDF /JS object 6 at offset 0x1A9 6274 bytes
stream_006_off00007e02.bin
edfcb2e192c0a381ad1be734dcf3c1525b16ccefd4b4d8477780a13e5b77b7b2		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x7E02 11292 bytes
icc_00_off00004905.icc
2b3aa1645779a9e634744faf9b01e9102b0c9b88fd6deced7934df86b949af7e		 pdf-icc-profile PDF ICC profile at offset 0x4905 3144 bytes
polyglot_child_pdf_off00002c22.pdf
581f66dfbd35f78a15eeb62aa5fd20a620cc5caa04e117b663d268f4cefeb4c9		 polyglot-child-pdf Secondary PDF body inside pdf container at offset 0x2C22 59139 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.