PDF malware analysis — malicious · 3608bd7f4395ba9b

MALICIOUS

PDF

225.6 KB

MD5: a4582371098f8922d50efc100011754d SHA-1: 5a6f82780369fdb6af96322fc9a747ca83aa4e24 SHA-256: 3608bd7f4395ba9b0df3b0bcb08ec3eb028191018440dcde75a27b904df5a3fc

126 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including 'PDF_JAVASCRIPT', 'PDF_JS', and 'PDF_EVAL'. The 'eval()' call and 'String.fromCharCode' usage suggest obfuscated code execution. ClamAV detection as 'Pdf.Exploit.Agent-36086' confirms its malicious nature. The extracted JavaScript file, 'javascript_obj0006_000.js', likely contains the payload or exploit code.

Heuristics 6

ClamAV: Pdf.Exploit.Agent-36086 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36086
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution (matched inside decoded stream)
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. (matched inside decoded stream)
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
`javascript_obj0006_000.js` `cdcd75170d7d1172c9e7497bf6c009b6a8b3163cc8d62a68a74ca6b68c1797d8`	pdf-javascript-stream	PDF /JS object 6 at offset 0x143	317241 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s). Carved artifact contains 10 long base64-like blob(s).

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