PDF malware analysis — malicious · a02b1e099f455c74

MALICIOUS

PDF

26.3 KB Created: 2011-72-51 03:25:00

MD5: b410068a82f46e1f652a7af2f86eb849 SHA-1: b6ec70e932a195dc09e1918194155a85ffbee5c0 SHA-256: a02b1e099f455c74c7c07562a4724d3381b35998672214b79f24ff88f0b007de

88 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF contains embedded JavaScript, which is flagged by multiple heuristics including PDF_JAVASCRIPT, PDF_JS, and PDF_EVAL. The ML classifier also strongly indicates maliciousness. The eval() call within the JavaScript stream is a high-priority indicator, suggesting the execution of obfuscated or dynamically generated code. While the specific family is not identifiable, the techniques point to a common PDF-based malware delivery mechanism.

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_obj0001_000.js` `83c78eb9dab32f7f78a0a05991422f05e1791ea8d69d05051fd53dad66ef943b`	pdf-javascript-stream	PDF /JS object 1 at offset 0x64AD	907 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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