PDF malware analysis — malicious · 7b19e98badf09fd9

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: 366bdb87141188c5400869a90579323a SHA-1: 12a022dc97fd3699fe98a21b1fc990fdd9fdf5e8 SHA-256: 7b19e98badf09fd979cc48a6f861f1b9b4f3ba66469675631bc4e2db8c8eeca8

208 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript with multiple `eval()` calls, indicating obfuscated code execution. Heuristics confirm PDF JavaScript actions and embedded JS streams. ClamAV detection as 'Pdf.Exploit.Agent-36118' strongly suggests this is a known exploit. The primary function of the embedded scripts appears to be the execution of further malicious code, likely a downloader for a second-stage payload.

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` `2f0d3832e6306db5d9123c539fed75cae67ba9e359c492f786eb90b6adde993a`	pdf-javascript-stream	PDF /JS object 13 at offset 0x336	13374 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s). Carved artifact contains 3 long base64-like blob(s).
`javascript_obj0013_001.js` `348436872e747213def270cd1814cd848e66c7fabcc99c447fdcf1fc99755127`	pdf-javascript-stream	PDF /JS object 13 at offset 0x359	14080 bytes
Detection ClamAV: Pdf.Exploit.Agent-36118 Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s). Carved artifact contains 3 long base64-like blob(s).

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