PDF malware analysis — malicious · e55d44bef2d56d55

MALICIOUS

PDF

4.6 KB Created: 2008-08-06 01:42:27 Authoring application: Scribus 1.3.3.12 (via Scribus PDF Library 1.3.3.12)

MD5: 19e04c028dbb18d8b958714b469b2eb9 SHA-1: 546692d3d3380b0e9c29ecb2d0a15d148f161981 SHA-256: e55d44bef2d56d55f03c28d330c4ba8870ca3d345fe8a066403c5d37033efaa8

88 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

This PDF file was flagged as malicious by an ML classifier with high confidence. Static analysis revealed embedded JavaScript, including an eval() call, which is commonly used to obfuscate malicious code. The JavaScript is likely responsible for downloading and executing a second-stage payload. The PDF structure and the presence of JavaScript point towards a common malware delivery technique.

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_obj0013_001.js` `c04517315738f51d2a12f8e180b2c179248bae8b175c605b5521a90adac494a0`	pdf-javascript-stream	PDF /JS object 13 at offset 0x36B	6442 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 eval/decoder/string-building token(s).

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