Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1ad2a28c67de4c1…

MALICIOUS

PDF

14.4 KB
MD5: 2ac3795013bd9c823e1f1e0c42e65289 SHA-1: de3c0e7eb9bcdb0e21a9db48ff68aa4aa3c6182b SHA-256: b1ad2a28c67de4c1bbd22d42b190963954fce04efbfd3fbc770bd41464cdd78d
170 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: User Execution

The PDF file contains an XFA form that exploits CVE-2010-0188, a known vulnerability in Adobe Reader. The XFA numeric evaluation stager suggests the execution of embedded JavaScript. ClamAV also detected this as Js.Exploit.HTML-30, indicating a JavaScript-based exploit. The embedded URL is likely related to the XFA template, but the primary malicious activity stems from the exploit itself.

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/