Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea7ef696b8672eb0…

MALICIOUS

PDF

18.9 KB
MD5: 1289446b15f27952f794446230c527c4 SHA-1: ea4570fcd7e3af411da02c2f8dcce3fdb8e810ca SHA-256: ea7ef696b8672eb06f53128f3174d4c4a6b0809fee0926db533e12354c4441f7
168 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1566.002 Spearphishing Attachment T1190 Exploit Public-Facing Application

The sample is a PDF file that leverages XFA (XML Forms Architecture) to deliver a malicious payload. Heuristics indicate a critical vulnerability exploit, specifically CVE-2010-0188, which targets Adobe Reader's LibTIFF component. The XFA numeric eval stager further suggests an attempt to execute arbitrary code. The embedded URL, while seemingly benign, is part of the XFA structure and could be used in conjunction with the exploit.

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/