Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd421dfc2fca05fe…

MALICIOUS

PDF

10.5 KB Created: 2009-12-10 09:23:27 +03:00
MD5: 9e208924db11a10991c4598abf4515b3 SHA-1: fc3ac29d6bb096754d5a0f8a4f22b0fb4081691e SHA-256: bd421dfc2fca05fe5e8f623423dfa5cb0b10824e428e6835963446d72b1d99ff
144 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: User Execution: Malicious File T1566.002 Phishing: Spearphishing Attachment T1027 Obfuscated Files or Information

The PDF file contains obfuscated JavaScript and U3D content, triggering heuristics related to PDF exploits and obfuscation. Specifically, the 'PDF_U3D_CVE_RELATED' heuristic indicates a potential vulnerability in Adobe Reader's 3D parsing capabilities. The presence of ASCIIHexDecode and ASCII85Decode filters further suggests attempts to obfuscate malicious content. While no specific family is identified, the techniques point towards a malicious PDF designed to exploit vulnerabilities upon opening.

Heuristics 6

  • U3D/3D content in PDF — Adobe Reader 3D parser CVE-family indicator high CVE related PDF_U3D_CVE_RELATED
    PDF contains U3D (Universal 3D) or 3D annotation content — CVE-2011-2462 and CVE-2009-3953 are critical vulnerabilities in Adobe Reader's U3D processing that allow arbitrary code execution. U3D content in PDFs is extremely rare in normal documents.
  • ClamAV: Heuristics.PDF.ObfuscatedNameObject critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Heuristics.PDF.ObfuscatedNameObject
  • ASCIIHexDecode filter (with exploit indicators) medium PDF_FILTER_HEX
    Hex-encoding filter present alongside exploit delivery indicators — often used to hide payload or shellcode bytes
  • 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.
  • ASCII85Decode filter (with exploit indicators) low PDF_FILTER_85
    ASCII85 encoding filter present alongside exploit delivery indicators — uncommon outside of obfuscation