PDF malware analysis — malicious · ea95ff79d8f0e5c3

MALICIOUS

PDF

14.4 KB Created: 2009-05-01 21:21:45 Authoring application: tvEeSFCPx (via NeTSnrx)

MD5: eff1b6313d59001756d04e135ec75222 SHA-1: 019d93806bc52ccb55a7b52ce531eb33a2789880 SHA-256: ea95ff79d8f0e5c3717f865856006d72a9ead623f1e5500829bbf2042cb70f65

156 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF contains obfuscated JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT, PDF_JS, and PDF_EVAL. The ML classifier and ClamAV detection strongly suggest malicious intent, specifically identifying it as Pdf.Exploit.Agent-35384. The JavaScript likely attempts to exploit a vulnerability within the PDF reader to download and execute a secondary payload, a common attack pattern for this type of document.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 6

ClamAV: Pdf.Exploit.Agent-35384 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-35384
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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0007_000.js` `f3c2d02fd5fd850efdcaca379e7c6b01c8a672ae4787a91b179b32e4e11da5d6`	pdf-javascript-stream	PDF /JS object 7 at offset 0x22D	5324 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).
`javascript_obj0007_001.js` `a626c825ebf029ac5b6c05472a14841dab603b0db35175398bd71f18480cca02`	pdf-javascript-stream	PDF /JS object 7 at offset 0x22D	51 bytes

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