Malicious PDF — malware analysis report

Static analysis result for SHA-256 8bb8258f9089e3d4…

MALICIOUS

PDF

14.4 KB
MD5: 8a6a6417697aae7307368351ba5467cf SHA-1: 8138d8b5a2ed62957ec9e10752ea084fd1196070 SHA-256: 8bb8258f9089e3d4f9fcf399bdd215e142441396d39cd97795e7436898fe4d40
168 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: User Execution T1566.001 Phishing: Spearphishing Attachment

The PDF file contains an XFA form that triggers a critical vulnerability (CVE-2010-0188) in Adobe Reader, specifically related to LibTIFF processing. The heuristic 'Js.Exploit.HTML-30' further indicates the presence of JavaScript-based exploit code. The embedded URL, while benign in reputation, is part of the XFA template structure. The primary attack vector is likely a phishing attempt where the user is tricked into opening the malicious PDF.

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/