PDF malware analysis — malicious · 01e7ea97b3e9cac5

MALICIOUS

PDF

9.6 KB Created: 2014-01-30 18:23:39 Authoring application: mx0PtSK4bZFcVz (via winCOH7J8)

MD5: 1dee94033e6bd4f6f78b2882d4d8df78 SHA-1: 1ce49e7ccef1d680044fd641dfb1ee6d2cbf2b3a SHA-256: 01e7ea97b3e9cac53b9dcff6770740601af93f5c22a45784c6112e18e84caced

208 Risk Score

Malware Insights

MITRE ATT&CK

T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF file contains obfuscated JavaScript that utilizes eval() to execute malicious code. The JavaScript is designed to download and execute a second-stage payload, as indicated by the 'Pdf.Dropper.Agent-7222394-0' ClamAV detection and the ML classifier's high confidence score. The specific URL or payload is not directly visible due to obfuscation, but the overall pattern suggests a dropper functionality.

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.Dropper.Agent-7222394-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7222394-0
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` `24cb0958e14235c264aba1a3e30b72fc4f90fc0adb57c17bda3460214a9b0166`	pdf-javascript-stream	PDF /JS object 7 at offset 0x240	8360 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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