Malicious PDF — malware analysis report

Static analysis result for SHA-256 8672c734f2c6f68b…

MALICIOUS

PDF

214.5 KB Created: 2009-09-17 09:09:59 +08:00 Authoring application: Acrobat Distiller 7.0 (Windows)
MD5: 8b9c1d4561bcade87183345afd45d61e SHA-1: c5f2f1b67ca29cfeeefe5b39c3424a92c0c3c118 SHA-256: 8672c734f2c6f68b067faf09417e679e9f4a12e538ad66a96dcc7847d68630ab
140 Risk Score

Malware Insights

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

This PDF file contains embedded JavaScript that exploits the CVE-2009-0927 vulnerability, specifically targeting the Collab.getIcon property. The JavaScript is designed to be executed upon opening the PDF, likely leading to the download and execution of a secondary payload. The ClamAV detection 'Pdf.Exploit.Agent-30307' further confirms its malicious nature.

Heuristics 7

  • 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)
  • ClamAV: Pdf.Exploit.Agent-30307 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-30307
  • 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.
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PSEOF. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
  • 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
29f3737c2668ec56e4ea94a51a7514cde4d82b0ae9dfed8f04100f14cb6db578		 pdf-javascript-stream PDF /JS object 17 at offset 0x4DA 2916 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
25e1c8d348f30abc1ec2d1b24cedf663b82aa6e029879ffe8d1c49e8c86125b9		 deobfuscated-js JavaScript property alias normalized stage at offset 0x4DA 2576 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 eval/decoder/string-building token(s).

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