PDF malware analysis — malicious · 3786d7313d02850e

MALICIOUS

PDF

9.3 KB Created: 2010-06-04 15:04:03 Authoring application: o7dQVXpnFyDHM (via gptnk8LD9fDTKZ)

MD5: 362f937792fca6b0edd6841888ed6cdd SHA-1: 98f1a02128be8fc41ff7de31ead8e2ab933766cc SHA-256: 3786d7313d02850ec3940624bb9a3cb87f6d9fec849521efe132add657421231

88 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file contains embedded JavaScript, which is flagged by multiple heuristics including PDF_JAVASCRIPT, PDF_JS, and PDF_EVAL due to the presence of an eval() call. The ML classifier also strongly indicates maliciousness. The JavaScript is likely responsible for executing a malicious payload, but its obfuscation prevents a more detailed analysis of its specific actions or reconstructed IOCs. The file's authoring application also appears suspicious.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

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_obj0007_000.js` `af2105c06914b0034c4ad1092764eaa9d5f1749c8b3db37b2742103676dab371`	pdf-javascript-stream	PDF /JS object 7 at offset 0x244	8014 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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