Malicious PDF — malware analysis report

Static analysis result for SHA-256 38c8e2fa08bfb5d2…

MALICIOUS

PDF

28.5 KB
MD5: 2c3c660061e35e78ebbf2a9da5d7c646 SHA-1: 8ebc0f12e33ecce7fdc7ad665afd0e620905b859 SHA-256: 38c8e2fa08bfb5d244041e99d19cbce06383bfc06981d3e5114df32ca0a61769
168 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1059.004 Command and Scripting Interpreter: PowerShell

The sample is a PDF file that leverages the CVE-2010-0188 vulnerability, a known exploit targeting Adobe Reader's LibTIFF component via XFA forms. The XFA numeric eval stager indicates the presence of code designed to execute a payload. The embedded URL, while not directly malicious in reputation, is part of the XFA structure and could be used to load additional malicious content. The ClamAV detection further confirms its malicious nature.

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: Pdf.Exploit.Agent-36825 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-36825
  • 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/