PDF malware analysis — malicious · d0a61f775317bf92

MALICIOUS

PDF

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

MD5: edb5fe6bd1bb7ca6ae308ce708bf60e0 SHA-1: 5a19497cf100b6347f59a11ef9061869e9932f9a SHA-256: d0a61f775317bf924eefed99cca6adff03b5c2397c7f1ef7a16cad22c6350b51

208 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

This PDF file was flagged as malicious by ClamAV and an ML classifier. It contains embedded JavaScript with eval() calls, indicating an attempt to execute obfuscated code. The presence of two large JavaScript streams suggests the primary function is to download and execute further malicious content. The obfuscation makes it difficult to determine the exact payload or persistence mechanisms.

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` `7dd3df5bcbefafb180b5a5614bf86cc2375ab25f86a78f5fabd74adfbff1d8e2`	pdf-javascript-stream	PDF /JS object 13 at offset 0x336	13452 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s). Carved artifact contains 20 long base64-like blob(s).
`javascript_obj0013_001.js` `4377fd3d17cb9fc3d5e18254fae86310d99f12604e94e545c8963e23c7db9d47`	pdf-javascript-stream	PDF /JS object 13 at offset 0x359	14158 bytes
Detection ClamAV: Pdf.Exploit.Agent-36118 Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s). Carved artifact contains 20 long base64-like blob(s).

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