Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ba15e7ca8042f01…

MALICIOUS

PDF

4.77 MB Created: 2009-09-17 09:09:59 +08:00 Authoring application: Acrobat Distiller 7.0 (Windows)
MD5: 30897ea409b25c6d0c033e5c78035122 SHA-1: 3494e334a218a373f568429e20db28e8fe6448a1 SHA-256: 2ba15e7ca8042f013ae8024146ea4975f0729a2da7a356e3978b1f7c74cabce8
78 Risk Score

Malware Insights

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

The PDF file contains embedded JavaScript that exploits the CVE-2009-0927 vulnerability (Collab.getIcon). The JavaScript is obfuscated but appears to be designed to download and execute a second-stage payload. The presence of JavaScript actions and embedded JS streams, along with the specific CVE exploit, strongly suggests a malicious intent to compromise the user's system.

Heuristics 5

  • Collab.getIcon — CVE-2009-0927 critical CVE exact CVE_2009_0927
    PDF JavaScript calls Collab.getIcon — CVE-2009-0927 is a stack buffer overflow in Adobe Reader triggered by Collab.getIcon() with a crafted argument. Allows arbitrary code execution. (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
7fdcd4eb198a07b4a7094daf62b0d480a92c2fa13481746c1f34a8c50ad18e4d		 pdf-javascript-stream PDF /JS object 17 at offset 0x4DA 2889 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
3bd334f05699cfc02554ebdf4a1f5438658f7b4809930685862f3acf8350be6d		 deobfuscated-js JavaScript hex-escape property alias normalized stage at offset 0x4DA 2535 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 eval/decoder/string-building token(s).

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