PDF malware analysis — malicious · cc59450dedb50d06

MALICIOUS

PDF

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

MD5: 3437d27d01a794bd3b61eac1c1b7c1f6 SHA-1: 8f5c5b845f2a73a7421e5e1fb4401ada9246f04b SHA-256: cc59450dedb50d06f5118237ca469359ad935194b860a51fe8d7b07c64106e11

208 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

This PDF file was flagged as malicious by multiple heuristics, including a critical ClamAV detection (Pdf.Exploit.Agent-36118) and a high-confidence ML classifier. The presence of JavaScript actions and an eval() call, along with embedded JS streams, indicates an attempt to execute malicious code. The script's obfuscated nature and the use of eval() suggest it is designed to download and execute a second-stage payload, a common technique for malware delivery.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 6

ClamAV: Pdf.Exploit.Agent-36118 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36118
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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0013_000.js` `6257081140f491d3b8c6853fe9a299b0c178edf16951b312bfd7ec8aca2a6850`	pdf-javascript-stream	PDF /JS object 13 at offset 0x336	13192 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).
`javascript_obj0013_001.js` `f3666a6d7ddd9344ce4e39bf93511437b8fe1ffbe57c2f6e8c8219ae871df242`	pdf-javascript-stream	PDF /JS object 13 at offset 0x359	13898 bytes
Detection ClamAV: Pdf.Exploit.Agent-36118 Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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