Malicious PDF — malware analysis report

Static analysis result for SHA-256 96462d6257e87a9c…

MALICIOUS

PDF

28.6 KB
MD5: 6a3510a50573d68c5de0fcf392434b35 SHA-1: f812ccb2574fc29a679981e88f7eab8b0418c3e4 SHA-256: 96462d6257e87a9c5ac6c9f7f7e632cef326b352fa0dae447a893399e05c555b
170 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1204.001 Malicious Link: Malicious Link T1204.002 Malicious Link: Malicious File

The sample is a PDF file that leverages the XFA (XML Forms Architecture) feature to exploit CVE-2010-0188, a vulnerability in Adobe Reader's LibTIFF processing. The XFA numeric character-table evaluation stager indicates the payload is designed to execute arbitrary code. The embedded URL, while not directly used for payload delivery in this stage, is part of the XFA template structure.

Heuristics 6

  • 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
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PSEOF. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
  • 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/