Malicious PDF — malware analysis report

Static analysis result for SHA-256 3fb298567c8bd618…

MALICIOUS

PDF

14.1 KB
MD5: b1b19beea30de704bcda464288e8f4b5 SHA-1: 50bf1fd182826848ec34dd0fafa3ba7a5e3bcba8 SHA-256: 3fb298567c8bd61815c4b107125c4decf26aa6ea96cec6c7594b7588e0b4a5a7
168 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1204.001 Malicious Link: Malicious Link T1059.001 Command and Scripting Interpreter: PowerShell

The PDF file contains XFA (XML Forms Architecture) content, which is often used to deliver exploits. Specifically, the CVE-2010-0188 heuristic indicates an exploit targeting a vulnerability in Adobe Reader's handling of LibTIFF within XFA forms. The ClamAV detection 'Js.Exploit.HTML-30' further confirms the malicious nature, suggesting embedded JavaScript is used for exploitation. The embedded URL, while seemingly benign, is part of the XFA structure and could be used to load malicious content.

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: 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
  • 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/