Malicious PDF — malware analysis report

Static analysis result for SHA-256 30c78450648865e3…

MALICIOUS

PDF

8.5 KB Created: ֏mçô¯.îT7£œÖu· Authoring application: ÁÖ[4µ¹ì7îB4¿œÌwµ (via ÁÖ[4µ¹ì7(A±ã‹$õ¨;ÓK9L‘7ø•;)
MD5: 0e43a70de5cf91f99b6885993ff3d7b4 SHA-1: 23b13d49cdfb1620264d50f6489194259a9cf866 SHA-256: 30c78450648865e312cf333779fc7a33b31e18d51e6bf4c6d8d4c02fb0521293
118 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF file is flagged as malicious by ClamAV and exhibits characteristics of an exploit. It contains embedded JavaScript and is encrypted, with an OpenAction that likely hides the exploit payload from static analysis. The presence of JavaScript actions and embedded JS streams points towards an attempt to execute malicious code upon opening.

Heuristics 5

  • ClamAV: Pdf.Exploit.Agent-3881 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-3881
  • Encrypted PDF carries /OpenAction — payload hidden from static analysis high PDF_ENCRYPTED_WITH_JS
    PDF declares /Encrypt and also references an executable trigger (/OpenAction). Document encryption hides the JavaScript body and stream contents from static scanners — combined with auto-execution indicators this is a known evasion pattern used to deliver weaponised JavaScript that the analyst cannot inspect without the decryption key.
  • 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.
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser exited 1. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.