Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd9d010e97b996c7…

MALICIOUS

PDF

32.0 KB
MD5: 6aa0cca2f910589264e0f984e1aef8cc SHA-1: 1a95a780281619532fa7b35b3344f16bf74cc331 SHA-256: bd9d010e97b996c7c68fc97dea8d15d48f91cab1f0a49fe745532047b446deeb
148 Risk Score

Malware Insights

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

The PDF file contains XFA forms with executable scripts, identified by high-severity heuristics. The ClamAV detection 'Js.Exploit.HTML-30' and the presence of an embedded URL suggest a malicious intent. The XFA numeric stager heuristic indicates the script is designed to evaluate numeric expressions, likely to deobfuscate and execute a payload. The embedded URL is likely used to fetch this 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/