Malicious PDF — malware analysis report

Static analysis result for SHA-256 acedeb0cadf6458a…

MALICIOUS

PDF

32.1 KB
MD5: 543a6c12f10a47df10d27f77bee4efc8 SHA-1: 6546e2cdeeb08e3aa2b14779bc56ae91551c7b30 SHA-256: acedeb0cadf6458a1b86d4427752123aa027d9650a727f30c7b57de773874d19
148 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File

The PDF file contains an XFA form with executable script, identified as a stager by heuristics. ClamAV detection as Js.Exploit.HTML-30 further confirms malicious intent. The embedded URL is likely part of the exploit chain, though its exact role is unclear without further analysis. The script's primary function appears to be executing malicious code, as indicated by the 'XFA numeric stager' and 'XFA form contains risky executable script' firings.

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/

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