Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe7d6d3eeb943acc…

MALICIOUS

PDF

3.9 KB
MD5: 9467651e947c141457dd19d33496a24d SHA-1: a81646b91a91e12f980c9969bbdf9ae82a434167 SHA-256: fe7d6d3eeb943acceeb8b9edbff770fca65aa99a6700124188a199bfb726158b
112 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 JavaScript/Shell Scripting: JavaScript Execution T1204.002 Malicious File: User Execution: Malicious File

The critical ClamAV detection 'Pdf.Exploit.Agent-36178' strongly indicates this PDF is malicious. Heuristics confirm the presence of embedded JavaScript and the use of PDF filters commonly associated with exploits. The document body is unreadable, but the combination of these factors suggests the PDF is designed to exploit a vulnerability and execute malicious JavaScript, likely to download and run a secondary payload.

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