Malicious PDF — malware analysis report

Static analysis result for SHA-256 50721842e5edc291…

MALICIOUS

PDF

14.4 KB
MD5: 4c6ff64a8bb0f78a75ddbb78101684f8 SHA-1: 2fdfe776fbd08a5d8b8359be538a408d2d4cf444 SHA-256: 50721842e5edc291acf1988bf7c9dd49f85ff0cc2c428226d0af46d2f3c783eb
168 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1059.001 PowerShell

The PDF file contains an XFA form that leverages the CVE-2010-0188 vulnerability in Adobe Reader. This exploit is designed to execute arbitrary code, as indicated by the ClamAV detection of Js.Exploit.HTML-30. The embedded URL, while not directly malicious in this context, is associated with XFA templates.

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/