Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0e332886147a95e…

MALICIOUS

PDF

426.0 KB Created: 2010-11-29 10:29:36 Authoring application: FPDF 1.6
MD5: c7f28c85dc0fbd476f732f08e2eeec3e SHA-1: effdd6fb5fde48ad20d6ce71a2d92f56310d68e9 SHA-256: a0e332886147a95ebc49bf35094509d67e6c56ec93fe92a1e5516c95afc74047
74 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by an ML classifier with a high confidence score. Heuristics indicate the presence of embedded JavaScript and the use of ASCIIHexDecode filters, suggesting an attempt to obfuscate malicious code. The document body is truncated and unreadable, but the presence of JavaScript actions and streams points towards an exploit attempt, likely to download and execute a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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.
  • XFA form low PDF_XFA
    PDF uses XML Forms Architecture — can contain script logic
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://ns.adobe.com/xdp/
    • http://www.xfa.org/schema/xci/2.6/
    • http://www.xfa.org/schema/xfa-template/2.6/