PDF malware analysis — malicious · 2add79e7751e87d0

MALICIOUS

PDF

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

MD5: a4e1d7d227ad130be29c28911ddc48e7 SHA-1: c25ed835d42f95603e5b0f5ed48c6ea958732b22 SHA-256: 2add79e7751e87d07624e9bec7f11d5ee5520b34ee9416c1130cf3ad0095eec0

148 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

This PDF file was flagged by ClamAV as Pdf.Exploit.Agent-36118 and a machine learning classifier indicated a high probability of maliciousness. The presence of JavaScript actions and an eval() call within the PDF strongly suggests that the embedded JavaScript is designed to execute arbitrary code. The script appears to be obfuscated, but the use of eval() and string concatenation points towards dynamic code execution, likely for downloading and running a second-stage payload. The specific exploit used is not detailed in the provided heuristics, hence the confidence is not 100%.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 5

ClamAV: Pdf.Exploit.Agent-36118 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36118
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` `d1ea64654efe4e461db63b56baf20fc9ab92ba0cefd1054327253475817dc397`	pdf-javascript-stream	PDF /JS object 13 at offset 0x336	13385 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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