Malicious PDF — malware analysis report

Static analysis result for SHA-256 c26e3ff540602eaf…

MALICIOUS

PDF

32.1 KB
MD5: 54f7be107d2e6bf99446366cb4e77fc0 SHA-1: 2958bf65176ff1538e35e78272eaf64187fc95ab SHA-256: c26e3ff540602eaf5f0a67f6dad95971b83c460403840c4e66c18f5ec635b1b4
148 Risk Score

Malware Insights

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

The PDF file contains XFA (XML Forms Architecture) which is known to be abused for malicious purposes. Specifically, the 'PDF_XFA_SCRIPT' and 'PDF_XFA_NUMERIC_EVAL_STAGER' heuristics indicate the presence of executable script within the XFA form, designed to evaluate numeric expressions. The 'CLAMAV_DETECTION' heuristic further confirms its malicious nature, identifying it as Js.Exploit.HTML-30. The embedded URL is likely part of the exploitation chain.

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/