Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1764d6ebdeded7f…

MALICIOUS

PDF

28.8 KB
MD5: 3c6c8b912c394368b0dff16fec12c21c SHA-1: 3db10271f6331d356cad9a2c460bb1e66c44b981 SHA-256: f1764d6ebdeded7fa40cbf7bbab19e8600434fa9deb18fb9b48fd9fc874ff8c3
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 forms and a critical vulnerability (CVE-2010-0188) in Adobe Reader's LibTIFF processing. The XFA numeric eval stager indicates the initial stage of the exploit chain. The embedded URL is likely related to the exploit's functionality, though its reputation is unknown. The ClamAV detection further confirms its malicious nature.

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-36825 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-36825
  • 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/