Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce9079ab317c7eae…

MALICIOUS

PDF

65.4 KB Created: 2009-07-08 10:53:46 +08:00 Authoring application: Acrobat Distiller 7.0 (Windows)
MD5: 47c9716e8faa3d757abd983bf70373d4 SHA-1: 167aea5d392f18326c2b01b75b025c0f9ddacadd SHA-256: ce9079ab317c7eae8fe575f3b2bc29d7f2721a09062a7b86edd970862a9bf69d
78 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains embedded JavaScript that leverages the CVE-2009-4324 vulnerability (media.newPlayer). This exploit is designed to execute arbitrary JavaScript, which is a common technique for downloading and executing further malicious content. The presence of obfuscated JavaScript streams and the critical heuristic firing for this specific CVE strongly indicate a malicious intent to compromise the user's system.

Heuristics 5

  • 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. (identified after JavaScript deobfuscation)
  • 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.
  • Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
  • 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/xap/1.0/
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/pdfx/1.3/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0017_000.js
4fca79cd30d80cf3472f33bb0c0f86e5752b640e2a0b1bb35ec5df77a519463b		 pdf-javascript-stream PDF /JS object 17 at offset 0x4DA 4380 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 eval/decoder/string-building token(s).
js_property_alias_stage_000.js
b4a76081ac802f49f0ca7ec09f3cdc28e11802afe3dbc6700f8de52754770c35		 deobfuscated-js JavaScript hex-escape property alias normalized stage at offset 0x4DA 4068 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 eval/decoder/string-building token(s).

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