PDF malware analysis — malicious · 0c8c4de00eb9cda8

MALICIOUS

PDF

9.3 KB Created: 2010-05-11 17:01:25 Authoring application: o0Exi2 (via lhq7M8MArNYT)

MD5: 6e063b7762c83c75ae9b5430d6e22b3f SHA-1: a59bace7c90e9c87020f8e73436d8faea6ae81f0 SHA-256: 0c8c4de00eb9cda863bb55631fb82e7fd321a729a5bd231cfe6d09ed5c2ba1ee

148 Risk Score

Malware Insights

MITRE ATT&CK

T1059.007 JavaScript T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains embedded JavaScript that utilizes eval() and obfuscation techniques, strongly indicating malicious intent. The script is designed to download and execute a secondary payload, as evidenced by the PDF_JS_EXPLOIT_CLUSTER heuristic. The ML classifier also assigned a high probability of maliciousness.

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` `3d7f412324b225961a1fd9c896dcf006314e27952075f262d903f5399fce660e`	pdf-javascript-stream	PDF /JS object 7 at offset 0x244	8056 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

Open this report in the interactive analyzer, or submit your own file for analysis.