Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b9c7f076ed70fb6…

MALICIOUS

PDF

1.1 KB
MD5: 611a572d4847a0ef1cf63fa1ae45f116 SHA-1: b5522743dffdb6fa379581af78e77575f0d63092 SHA-256: 4b9c7f076ed70fb68701ebb7ff2a4136584b7bc86e42e9b22e757fac75267415
104 Risk Score

Malware Insights

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

The PDF file contains embedded JavaScript and utilizes ASCIIHexDecode and ASCII85Decode filters, which are commonly used to obfuscate malicious code. ClamAV detected this as Pdf.Exploit.Agent-36178, indicating a known exploit. The embedded JavaScript is likely responsible for triggering the exploit and executing a malicious payload.

Heuristics 5

  • 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.
  • ASCII85Decode filter (with exploit indicators) low PDF_FILTER_85
    ASCII85 encoding filter present alongside exploit delivery indicators — uncommon outside of obfuscation