PDF malware analysis — malicious · c62aa5414911e138

MALICIOUS

PDF

32.3 KB

MD5: fa3cbacd768789a4dde1d60bb1251c41 SHA-1: 186cb613c1862f821332a6aca374e1be0110aaf7 SHA-256: c62aa5414911e138564b877448f8cababf5f6c2d800aec75be095492673bca85

178 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1059.001 PowerShell

This PDF file was flagged as malicious by ClamAV and a machine learning classifier. High-severity heuristics indicate the presence of a risky executable script within an XFA form, specifically a numeric evaluation stager. This stager is designed to execute code, likely to download and run a second-stage payload. The embedded URL, while not directly executable, is part of the XFA template structure.

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/

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