Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a97d2295861f993…

MALICIOUS

PDF

28.5 KB
MD5: 08fc31aca604e687bb0bb27db0e69d8e SHA-1: 7b6c1faffc44045b1996adabeb6f8e96e57a2cd1 SHA-256: 0a97d2295861f9931dd0e32d946a33fd1b219142498a9765dba97666551ee905
200 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

This PDF file contains an XFA form and triggers critical heuristics related to CVE-2010-0188, an exploit targeting Adobe Reader's LibTIFF component. The XFA numeric stager suggests an attempt to evaluate and execute code. The embedded URL, while seemingly benign, is present within the context of an exploit, indicating it could be part of a malicious chain. The ML classifier and ClamAV detection further confirm its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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/