PDF malware analysis — malicious · a04321da2b46903e

MALICIOUS

PDF

2.7 KB Created: 2008-12-17 23:30:58 UTC

MD5: 23d1a5b16dd6d5ee5a6343ef7d9d1720 SHA-1: 473d3a00176c5f1e8712ee1701d6eb90c29f26cf SHA-256: a04321da2b46903ee5bfb5f7ce2a1884ddb5ba210a76ceda567209854f5b0ddc

90 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The presence of an eval() call within the decoded JavaScript stream (PDF_EVAL) strongly suggests that the script is designed to execute arbitrary code, likely to download and run a second-stage payload. The ML classifier further supports the malicious nature of the PDF. No specific family could be identified, but the technique is common for initial compromise.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

Heuristics 4

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_obj0006_000.js` `669aae3ae33ac5235539fa847234d114dd3cc94f017bf8ea44cd55ea2e3ea59f`	pdf-javascript-stream	PDF /JS object 6 at offset 0xB5	3793 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.