Malicious PDF — malware analysis report

Static analysis result for SHA-256 96bfb3c0f1362aaa…

MALICIOUS

PDF

32.0 KB
MD5: 7e4082a69aee0c50a219bbe92ed404e6 SHA-1: 1bfc2a68726ec1bd4ba49ed596ba5919ac067249 SHA-256: 96bfb3c0f1362aaaa57e223b8d95e12d0bc2bef7d8b4ad3ab38c444914c83af0
148 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains an XFA form with executable script, identified as a stager by heuristics. ClamAV detected this as Js.Exploit.HTML-30, indicating a likely exploit attempt. The embedded URL is likely part of the exploit chain, though its reputation is unknown. The script's exact function is not fully discernible due to obfuscation, but it is highly probable that it downloads and executes a second-stage payload.

Heuristics 5

  • XFA form contains risky executable script high CVE related PDF_XFA_SCRIPT
    PDF embeds an XFA form whose script block contains exploit, submission/launch, or shell-execution primitives. Ordinary LiveCycle print/update scripts are left as generic XFA/JS signals unless stronger behavior is present.
  • 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/