PDF malware analysis — malicious · e61d8febdcec888e

MALICIOUS

PDF

7.4 KB Created: 2008-31-20 53:85:00 Authoring application: Scribus 1.3.3.12 (via Scribus PDF Library 1.3.3.12)

MD5: 1231a0875e12771c60b0ab3d9a91785d SHA-1: bc49ffcbc28b3d6faff7ac6519de60eed9a60ba0 SHA-256: e61d8febdcec888e9393d26c1f2a66bc7c047f37a94c032f22551824584c75f0

208 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-35587, indicating a known exploit. Static analysis revealed embedded JavaScript with multiple eval() calls, a common technique for obfuscating malicious code. The ML classifier also strongly indicated maliciousness. The JavaScript likely attempts to download and execute a second-stage payload, as suggested by the obfuscated nature and the presence of eval().

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 6

ClamAV: Pdf.Exploit.Agent-35587 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-35587
ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV

ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
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` `15612ffe41d88852f3df5b756ee2f50b347c1d27c31b4540edd4e403beb213f9`	pdf-javascript-stream	PDF /JS object 13 at offset 0x38B	6008 bytes
Detection ClamAV: Pdf.Exploit.Agent-35587 Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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