PDF malware analysis — malicious · e9b98ecd4b4031f3

MALICIOUS

PDF

11.0 KB Created: 2008-07-26 19:43:58 Authoring application: Scribus 1.3.3.12 (via Scribus PDF Library 1.3.3.12)

MD5: a38a50f937bbeed7549383990897f882 SHA-1: b8c2a5bc3dd87657bd34416aef73b4a8df2084d0 SHA-256: e9b98ecd4b4031f3921617f36b99714b854417cb494ff400fe610fa9d1359513

88 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1059.007 JavaScript

The PDF contains obfuscated JavaScript that utilizes eval() to execute code. The script appears to be constructing a string for a JavaScript function call, likely to download and execute a second-stage payload. The ML classifier strongly indicates maliciousness, and the presence of JavaScript actions and eval() calls are high-confidence indicators of malicious intent.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution
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_obj0013_000.js` `35c620233513c5d45b1b15014e90bf65b5e38e2263f967c1703dc4fb2b1df47d`	pdf-javascript-stream	PDF /JS object 13 at offset 0x336	9735 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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