Malicious PDF — malware analysis report

Static analysis result for SHA-256 43041c9ec07dd428…

MALICIOUS

PDF

3.9 KB
MD5: 58404be938b1f771043c5a17ed481beb SHA-1: 37116adb0d195789e0ae8c5283014a02746c15cb SHA-256: 43041c9ec07dd4287ee59fb9133747c3fb9d91a46a0225f96c521403487654a0
112 Risk Score

Malware Insights

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

The PDF file contains embedded JavaScript, utilizes ASCIIHexDecode and ASCII85Decode filters, and triggers a critical ClamAV detection for 'Pdf.Exploit.Agent-36178'. These indicators strongly suggest the PDF is designed to exploit vulnerabilities and execute malicious code. No specific family could be identified, but the techniques point to a common exploit delivery mechanism.

Heuristics 6

  • ClamAV: Pdf.Exploit.Agent-36178 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-36178
  • 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.
  • String.fromCharCode low PDF_FROMCHARCODE
    String.fromCharCode found — used to construct payload strings dynamically. Common in benign JavaScript libraries for codepoint manipulation, so this alone is informational; weaponised use is also caught by the dedicated fromCharCode-stage and exploit-shape rules. (matched inside decoded stream)
  • ASCII85Decode filter (with exploit indicators) low PDF_FILTER_85
    ASCII85 encoding filter present alongside exploit delivery indicators — uncommon outside of obfuscation