Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0ecbecc912e7587…

MALICIOUS

PDF

235.6 KB Created: 2009-07-08 10:53:46 +08:00 Authoring application: Acrobat Distiller 7.0 (Windows)
MD5: 4d0523b7140d218a7a3a35f9f35acfe3 SHA-1: b202e61636fb52ddb59754fc0d85f84b85962866 SHA-256: e0ecbecc912e7587734878ae0c9a445412499de92738be00c54730c8a7c5b85f
78 Risk Score

Malware Insights

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

The PDF document contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The critical CVE_2009_4324 heuristic specifically points to an exploit targeting a vulnerability in media player functionality, which is likely used to execute arbitrary code. The embedded JavaScript streams, particularly 'js_property_alias_stage_000.js', are expected to contain the malicious payload. While the exact nature of the payload is not fully detailed, the exploit and embedded script strongly suggest an attempt 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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0017_000.js
5ad0511b32241d3a5fcbf0e4e45cfa2f487331843ef573baed6e02732a5e779b		 pdf-javascript-stream PDF /JS object 17 at offset 0x4DA 2993 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 long base64-like blob(s).
js_property_alias_stage_000.js
d2899aa755b8223f76fd07ceeb06a4eada2deb355e6a1e3e23e86100357c5729		 deobfuscated-js JavaScript hex-escape property alias normalized stage at offset 0x4DA 2927 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 long base64-like blob(s).

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