Malicious PDF — malware analysis report

Static analysis result for SHA-256 efff833a004f57eb…

MALICIOUS

PDF

14.3 KB
MD5: 756e785ae12fbca032ec9ca06826a304 SHA-1: b802a00a01599705e86da0e0f4142d4aeff33081 SHA-256: efff833a004f57eba2d544e50f46cabaea08b55620097be48bb2d3a2c874ab7b
170 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The PDF file contains an XFA form that triggers the CVE-2010-0188 exploit in Adobe Reader. ClamAV also detected this as Js.Exploit.HTML-30, indicating JavaScript-based exploitation. The XFA numeric stager suggests a complex execution chain, likely involving JavaScript to download and execute a second-stage payload. The embedded URL is likely part of this malicious chain.

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: Js.Exploit.HTML-30 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Js.Exploit.HTML-30
  • 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/