Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1d3eef58173c6ba…

MALICIOUS

PDF

14.1 KB
MD5: e7210d442552c49a8b11e98dd3be2662 SHA-1: cb8037931bf0941ea799e167b3308d2eb9e65ea8 SHA-256: b1d3eef58173c6badd9a3ffb9cffc9a0c2ddb1400f03a28d26e10752f5ee3fec
168 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: User Execution T1059.001 Command and Scripting Interpreter: PowerShell

The PDF file contains XFA (XML Forms Architecture) content, which is known to be a vector for exploits. Specifically, the CVE-2010-0188 heuristic indicates a critical vulnerability in Adobe Reader related to XFA image handling. The presence of a ClamAV detection for Js.Exploit.HTML-30 further confirms malicious intent. The embedded URL is likely used in the exploitation process. The document body contains obfuscated JavaScript-like code that appears to be part of the exploit stager.

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/