PDF malware analysis — malicious · ff308f3bd6b976dc

MALICIOUS

PDF

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

MD5: 3e4b76c3359f9844610ed03a58c6801f SHA-1: c8e7f34184a0fbb2e21ef889726278170e76193e SHA-256: ff308f3bd6b976dc3a36b690760f7acafc11cc2174da483475d4f23e02a550de

178 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by PDF_JAVASCRIPT and PDF_JS heuristics. The presence of a PDF_EVAL rule firing suggests that the JavaScript code is being executed dynamically. ClamAV detections (Pdf.Exploit.Agent-35587) confirm the malicious nature of the file. The extracted artifact 'javascript_obj0013_001.js' is also flagged as suspicious. The primary attack pattern involves exploiting a PDF vulnerability to run obfuscated JavaScript, which is likely designed to download and execute a secondary payload.

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` `6b194f58d1fcb24bd5f4a3514c8118cdfa43fd86075cc4cca69845910414fec5`	pdf-javascript-stream	PDF /JS object 13 at offset 0x38E	5223 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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