Malicious PDF — malware analysis report

Static analysis result for SHA-256 496355ba64ffabe3…

MALICIOUS

PDF

10.6 KB Created: 2009-12-10 09:23:27 +03:00
MD5: 02991fa85c1829cb77e7e600a61635a0 SHA-1: ffcc1ee214417a4a42e419335d57b2acf82978c1 SHA-256: 496355ba64ffabe3c90739a69ce1ea7b87270a619509f3695021253fe6b47660
174 Risk Score

Malware Insights

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

This PDF file contains embedded JavaScript and U3D content, which is a known indicator for exploits targeting Adobe Reader's 3D parsing functionality (CVE-family). The ML classifier and ClamAV heuristic firings strongly suggest malicious intent. The embedded JavaScript is likely responsible for executing the exploit and delivering a secondary payload, although its exact function is obfuscated.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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