Malicious PDF — malware analysis report

Static analysis result for SHA-256 96bdf8adaea2ce5c…

MALICIOUS

PDF

28.6 KB
MD5: 664eb36f6c242a76029acfc616bc8481 SHA-1: a053ffd1faa4106d6de2c07bb0bdc6e5a493eba8 SHA-256: 96bdf8adaea2ce5ccc74ac5b1afe6a91f63b7232cffee2547d4e4edb9045603a
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. Heuristics indicate a critical exploit for CVE-2010-0188, which targets Adobe Reader's LibTIFF component when processing XFA forms. The XFA numeric character-table evaluation stager further supports the exploit chain. The embedded URL, while benign in reputation, is part of the XFA structure.

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/