Malicious PDF — malware analysis report

Static analysis result for SHA-256 60edb8ea1d75e0a0…

MALICIOUS

PDF

17.9 KB
MD5: 8b921dd5920cac6b393f2cb746e57989 SHA-1: 5dabdb63a5ca7ec913693cb73f161f5f1bc5b123 SHA-256: 60edb8ea1d75e0a00dab70a80847a5bbdf303225e24de614f843000e8c6dc4fb
200 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The PDF sample contains XFA (XML Forms Architecture) content and triggers critical heuristics for CVE-2010-0188, an exploit targeting Adobe Reader's LibTIFF component. The XFA numeric eval stager further indicates malicious intent. The embedded URL, while seemingly benign, is part of the XFA structure and could be used in conjunction with the exploit. The document body contains obfuscated JavaScript-like code that appears to be part of the exploit's execution chain.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • Adobe Reader LibTIFF XFA image exploit — CVE-2010-0188 critical CVE likely CVE_2010_0188
    PDF contains the CVE-2010-0188 exploit template: XFA JavaScript heap-spray setup, a generated TIFF image payload, and assignment of that TIFF data to an XFA image field rawValue to trigger Adobe Reader's LibTIFF parser.
  • ClamAV: Pdf.Exploit.Agent-36833 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-36833
  • XFA numeric character-table eval stager high PDF_XFA_NUMERIC_EVAL_STAGER
    PDF XFA initialize script reads numeric form data from rawValue, maps the values through a short character table, and evals the reconstructed stage. This is an exploit-kit staging technique even when the final decoded layer remains encoded.
  • 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://www.xfa.org/schema/xfa-template/2.5/