Malicious PDF — malware analysis report

Static analysis result for SHA-256 64421f1783ec1a96…

MALICIOUS

PDF

9.1 KB
MD5: 4669ae31fac6d1fde9caa621e352ad98 SHA-1: bc130e7c2d1c119337efa0dd1b7b5cd3c2012038 SHA-256: 64421f1783ec1a9611fe4b48c2e0a2c354f8eea9bb1010dbc15e96f5c82787be
66 Risk Score

Malware Insights

MITRE ATT&CK
T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF sample contains embedded JavaScript and uses ASCIIHexDecode filters, indicating an attempt to exploit a vulnerability. The ML classifier strongly suggests malicious intent. The embedded JavaScript is likely designed to execute a malicious payload, contributing to the overall attack.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.