PDF malware analysis — malicious · d43409340ae5de3a

MALICIOUS

PDF

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

MD5: 3770b740f0e46def6f7b7d3fd4c23c89 SHA-1: aa2331ec1aed085abfa73706e1e0e7e9aa972608 SHA-256: d43409340ae5de3a13ab2e2f614784cee2592cd7531439176e337e88a3e60dca

208 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF contains embedded JavaScript that utilizes eval() calls, indicating an attempt to execute arbitrary code. The ML classifier and ClamAV detection strongly suggest malicious intent, specifically identified as Pdf.Exploit.Agent-35587. The JavaScript appears to be obfuscated, making it difficult to determine the exact payload, but the presence of eval() and the high confidence scores point to a code execution attack.

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` `12f4348d9e551a4d10e6e92da5bcbffa34b5319c4ea2ef966f13954c55d2e072`	pdf-javascript-stream	PDF /JS object 13 at offset 0x38D	5136 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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