Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3751e810b7c019c…

MALICIOUS

PDF

18.0 KB
MD5: 592f10c83806d4a01b1fbbc5e7a55438 SHA-1: 794e473e07def9124cc4bde72d9dd6f52cc04cec SHA-256: f3751e810b7c019c3643c58dc1ebeb4299eccbd4fc191f5cdaf96637fa49d6a8
168 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1566.001 Spearphishing Attachment T1204 User Execution

The sample is a PDF file that leverages XFA (XML Forms Architecture) to deliver a malicious payload. Critical heuristics indicate the exploitation of CVE-2010-0188, a known vulnerability in Adobe Reader related to XFA processing. The embedded URL, while not directly malicious in reputation, is part of the XFA template structure. The document body contains obfuscated JavaScript-like code, likely part of the stager mechanism.

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-36831 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-36831
  • 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/