Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4552251442c5b26…

MALICIOUS

PDF

32.5 KB
MD5: b38bc878535a222b0656aa7dd0fbec96 SHA-1: 4e7f8ce12a0e9dff4d5bcbfcc02b94ce69f615e1 SHA-256: d4552251442c5b2627f5dd1684d8cc3fd46e0270fc3df2231bfa6b6a838e3d0c
178 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: User Execution: Malicious File T1059.007 Abuse Execution: JavaScript/VBScript

The PDF contains XFA forms with executable scripts, identified as a stager by heuristics. This suggests the PDF is designed to download and execute a secondary payload. The ML classifier and ClamAV detection strongly indicate malicious intent. The embedded URL is likely part of the exploit chain.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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: Pdf.Exploit.Dropped-92 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Dropped-92
  • 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/

Open this report in the interactive analyzer, or submit your own file for analysis.