PDF malware analysis — malicious · 9c33aa38b012a7be

MALICIOUS

PDF

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

MD5: 3bf86cdd666da16d83e68b30d488ce2a SHA-1: 3cb17668d95457a40a7af1de4a2821229d1e40cb SHA-256: 9c33aa38b012a7be84455f9e800b0bcabbc3719e408f0482a5bb071d1edf8a5b

178 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 obfuscation and dynamic code execution. ClamAV detections (Pdf.Exploit.Agent-35587) confirm malicious intent. The JavaScript is likely designed to download and execute a second-stage payload, as suggested by the heuristic firings for PDF JavaScript actions and eval() calls. The obfuscated nature of the script prevents a more detailed analysis of its specific actions.

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` `83f68dee9267ceba414ee333cee32ec23765fb5c792b2589cd4efa746aef07cd`	pdf-javascript-stream	PDF /JS object 13 at offset 0x38F	6056 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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