PDF malware analysis — malicious · 0eb0f0cc637c5b98

MALICIOUS

PDF

9.3 KB Created: 2010-06-14 00:15:36 Authoring application: zxy4ur9YVd15 (via v1Dt7DmglQo)

MD5: b26cebe539be829000e844abf049961a SHA-1: c7a39bff022b044f8495ab481de54d783392a016 SHA-256: 0eb0f0cc637c5b98486e5afa4af36a3c367a35eae77c01ef35c007af0b250744

148 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, a common indicator of obfuscated malicious code. The ML classifier strongly flags this PDF as malicious. The JavaScript is heavily obfuscated, making it difficult to determine its exact function, but it is highly probable that it is designed to download and execute a second-stage payload.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 5

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.
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_obj0007_000.js` `0ec2bb161069db8f11c22ace53cba5a73b584df763bda4d6ec57b056b4ecf34f`	pdf-javascript-stream	PDF /JS object 7 at offset 0x239	8184 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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