PDF malware analysis — malicious · 09697610d81ff872

MALICIOUS

PDF

6.9 KB Created: 2009-05-30 00:25:41 Authoring application: MGYyZfFmsaSprJcAkC (via PCIYvVtaJqDXmwfK)

MD5: 7aafb22b4a78dd945f6aeec579491f0e SHA-1: 55c970520e80ae190e3ff0291eb7fc9472cbe2cc SHA-256: 09697610d81ff8728f17808341f64263ed2d8e9b43231a2e25c0e53d41face1f

208 Risk Score

Malware Insights

MITRE ATT&CK

T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF file contains embedded JavaScript that utilizes an eval() function to execute obfuscated code. This JavaScript is designed to exploit a known PDF vulnerability, leading to the execution of a malicious payload. The ML classifier and ClamAV detection strongly indicate malicious intent, likely involving the download and execution of further malware.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 6

PDF JavaScript exploit cluster critical PDF_JS_EXPLOIT_CLUSTER

PDF combines an executable JavaScript/action surface with exploit staging indicators such as eval/unescape/fromCharCode, XFA script content, or a related CVE pattern. Benign form JavaScript remains low-severity, but this correlated cluster is high-confidence malicious behavior.
ClamAV: Pdf.Exploit.Agent-35572 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-35572
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.
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_obj0009_000.js` `7a6fffc36926840bf885c33185e76f3cb10b982394be19827bd0dd21a579ccd2`	pdf-javascript-stream	PDF /JS object 9 at offset 0x6F6	4475 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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