PDF malware analysis — malicious · 526dea80acaf812a

MALICIOUS

PDF

4.1 KB Created: 2008-09-07 22:47:39 Authoring application: Scribus 1.3.3.12 (via Scribus PDF Library 1.3.3.12; modified using iText 2.1.7 by 1T3XT)

MD5: 70b446ac4de797dcd624a42fb68822a9 SHA-1: 1d215ceb0d4e6b93b48cfb07a8be73a53234536c SHA-256: 526dea80acaf812aef618e39bbf946a2586ab3fcfe7136ee5ea84721ea38fb46

88 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF contains obfuscated JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT, PDF_JS, and PDF_EVAL. The ML classifier strongly suggests maliciousness. The JavaScript appears to be designed to execute arbitrary code, likely downloading and running a second-stage payload. The obfuscation makes it difficult to determine the exact payload or final destination without dynamic analysis.

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_001.js` `983e6cbc77fbc04ff3b38b94cac94bb63887e825e34ea21f46839cdd0e9ae57c`	pdf-javascript-stream	PDF /JS object 13 at offset 0x352	2603 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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