Malicious PDF — malware analysis report

Static analysis result for SHA-256 b780157875f08c8d…

MALICIOUS

PDF

17.8 KB
MD5: 14941abced7c58ffb15d94633504bb2c SHA-1: 67b8d98defb0d920a671283a056cae6fe9dbe7b2 SHA-256: b780157875f08c8dd4160e551ee2a537060c54f3dd9f73a8b23a5d8a3efd72e8
168 Risk Score

Malware Insights

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

The sample is a PDF file that leverages XFA forms to exploit CVE-2010-0188 in Adobe Reader. The XFA numeric character-table evaluation stager indicates the execution of a secondary payload. The embedded URL, while seemingly benign, is part of the exploit chain.

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/