Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd64eeec796919de…

MALICIOUS

PDF

31.6 KB
MD5: 8897bfd23e1605b5f6c900c04074fb3c SHA-1: c2c028a53ff5cb51545a6ec8429c4196da5b9943 SHA-256: fd64eeec796919de181110574ada4f390ee4365a5982995d0f29535f91867f79
148 Risk Score

Malware Insights

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

The PDF file contains XFA forms with executable scripts, as indicated by the PDF_XFA_SCRIPT and PDF_XFA_NUMERIC_EVAL_STAGER heuristics. ClamAV detection (Js.Exploit.HTML-30) further confirms its malicious nature. The embedded URL is likely part of the exploitation chain. The script's exact function is obscured by obfuscation, but it is designed to execute malicious code.

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/