PDF malware analysis — malicious · 2ed6c1ff893ad491

MALICIOUS

PDF

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

MD5: 24d013ac83a186b1fe4c5d853cf2eff4 SHA-1: 9d828a93e174a0d71add9f77bb956d66d870bf3c SHA-256: 2ed6c1ff893ad491b73c411c71bd13567c0116d7ba246cf4eb39a2dfd7b1c787

90 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 Command and Scripting Interpreter: PowerShell T1059.003 Command and Scripting Interpreter: Windows Command Shell T1059.007 Command and Scripting Interpreter: JavaScript/TypeScript

The PDF contains embedded JavaScript, which is flagged by multiple heuristics including eval() calls and ML classification. The JavaScript stream, named 'javascript_obj0001_000.js', is likely responsible for executing malicious code. The presence of JavaScript actions and embedded JS streams strongly suggests an attempt to exploit vulnerabilities or deliver a secondary payload.

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` `347788bb045a17d1bafbe32f59ccf91b82518a206dece3db0db1b39a3c1e7d54`	pdf-javascript-stream	PDF /JS object 1 at offset 0x5890	661 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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