Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ce5787bfcd2bcb0…

MALICIOUS

PDF

32.4 KB
MD5: 127e8f11984f9447804464cb9db22c91 SHA-1: f6f5b5e04cc1d3e9242351c0d3aaf54ed1e580ed SHA-256: 7ce5787bfcd2bcb0a3ac083982ce90f1e02f966986bf66c41813f35c41d3fcac
178 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1204.002 Malicious File

The PDF file contains an XFA form with executable scripts, identified as a stager for numeric character-table evaluation. This indicates an attempt to exploit a vulnerability within the PDF viewer to execute arbitrary code. 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/