Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6c45d5ee6420d7c…

MALICIOUS

PDF

31.9 KB
MD5: 48d452c20a4b34cfc668e47efdd4e6f0 SHA-1: 99a1533f5de6c9f149c2d63868ae5ec3a957a977 SHA-256: b6c45d5ee6420d7c96a871ce85f0a40e0b5316b571119766491617b50b2c9ec1
148 Risk Score

Malware Insights

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

The PDF file contains an XFA form with executable scripts, identified as a stager by heuristics. ClamAV detection confirms its malicious nature, specifically flagging it as Js.Exploit.HTML-30. The embedded URL is likely part of the exploit chain, though its exact role is not fully detailed by the static analysis.

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/