PDF malware analysis — malicious · 7d7bb6f372d74a5a

MALICIOUS

PDF

7.2 KB

MD5: dea5c3eeaee9e02184968de934097fde SHA-1: 6a2956872493dbe456fb2dffd18288c87eedde25 SHA-256: 7d7bb6f372d74a5aa2d70825f1a3e35302a4d7ef78176a4ec547008cedc3ee5e

156 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1059.007 JavaScript

The PDF contains obfuscated JavaScript, indicated by PDF_JAVASCRIPT, PDF_JS, PDF_EVAL, and PDF_FROMCHARCODE heuristics. The ML classifier and ClamAV detection strongly suggest malicious intent, specifically as Pdf.Exploit.Agent-35835. The deobfuscated JavaScript likely performs an exploit, though its exact function is not fully detailed in the provided evidence.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 6

ClamAV: Pdf.Exploit.Agent-35835 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-35835
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution
JavaScript action low PDF_JAVASCRIPT

PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
Embedded JS stream low PDF_JS

PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
String.fromCharCode low PDF_FROMCHARCODE

String.fromCharCode found — used to construct payload strings dynamically. Common in benign JavaScript libraries for codepoint manipulation, so this alone is informational; weaponised use is also caught by the dedicated fromCharCode-stage and exploit-shape rules.
Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE

One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`deobfuscated.js` `74c7e5201c01949a9fd2f9dd779130b409175102087590418ea10e906a1894e4`	deobfuscated-js	PDF JavaScript deobfuscation pass	133 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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