PDF malware analysis — malicious · cacf38a08fd04b84

MALICIOUS

PDF

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

MD5: 87b35d0777f6e0e2b43fabf0210466cc SHA-1: 63ba2fdf7348dc6398cb487b8ef72a76c82ee264 SHA-256: cacf38a08fd04b842b78e3f9147f8b344fedb602a19e60f3c740b7b500bae7f1

178 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1059.007 JavaScript

The PDF file contains embedded JavaScript with multiple eval() calls, indicating obfuscation and dynamic code execution. The ClamAV detection 'Pdf.Exploit.Agent-35587' strongly suggests a known exploit. The JavaScript is heavily obfuscated, but the presence of eval() and the extracted artifact 'javascript_obj0013_001.js' point to a malicious script designed to download and execute further stages.

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` `38a650c7420b054e5e9187eae1196ec78711567b3434639142be1280eaf54fdb`	pdf-javascript-stream	PDF /JS object 13 at offset 0x38A	4992 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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