Malicious PDF — malware analysis report

Static analysis result for SHA-256 c47fc8c1e7ddd610…

MALICIOUS

PDF

5.4 KB
MD5: 2556810771b99af6c849647ace1fbcc2 SHA-1: d9408e04684e82f53e18ef8f6206fcba35019821 SHA-256: c47fc8c1e7ddd61019c48f089837d045b1bf4745615ba1f21b835bbbd7bd8b5f
104 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1566.002 Spearphishing Attachment T1027 Obfuscated Files or Information

This PDF file exhibits multiple indicators of malicious activity, including embedded JavaScript and the use of obfuscated filters like ASCIIHexDecode and ASCII85Decode, which are commonly used to hide malicious code. ClamAV also flagged it as Heuristics.PDF.ObfuscatedNameObject. The presence of JavaScript suggests an attempt to execute code, likely to download and run a secondary payload.

Heuristics 5

  • 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