Malicious PDF — malware analysis report

Static analysis result for SHA-256 b365d30bf9d2a793…

MALICIOUS

PDF

14.4 KB
MD5: aafb03b619d985dac0a3ad6d6b3bbb48 SHA-1: 7a4f286fe31d97a04c4fb0b657dabe5607b23f4c SHA-256: b365d30bf9d2a793de7cb86feb4933d790118764eb57b68529f5448fb504941e
168 Risk Score

Malware Insights

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

This PDF file contains XFA (XML Forms Architecture) content, which is known to be a vector for exploits. The critical heuristic firing for CVE-2010-0188 indicates that the file exploits a vulnerability in Adobe Reader related to LibTIFF and XFA forms. The ClamAV detection 'Js.Exploit.HTML-30' further confirms its malicious nature, suggesting embedded JavaScript used in the exploit. The embedded URL is likely related to the exploit or a subsequent payload delivery. The XFA numeric eval stager heuristic points to a mechanism for executing code within the 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/