PDF malware analysis — malicious · 4980dccd46abdfc0

MALICIOUS

PDF

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

MD5: b5c66fdfdcac7e4f58d6fbfd08a9db92 SHA-1: c3b9b4fbff04a546dd618ad79cdf5a18ecd13ca1 SHA-256: 4980dccd46abdfc04598ebd793f15584ebdbfc9da2f5beea4f3d4d96f38577d2

118 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File T1566.002 Spearphishing Attachment

The PDF file contains embedded JavaScript with multiple eval() calls, indicating an attempt to obfuscate malicious code. The ClamAV detection of 'Pdf.Exploit.Agent-36118' and the heuristic firing for PDF_EVAL strongly suggest the exploitation of a PDF vulnerability to run this script. The script's purpose is likely to download and execute a second-stage payload, as is common with this type of exploit.

Heuristics 5

ClamAV: Pdf.Exploit.Agent-36118 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36118
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_000.js` `69e7136c2c89a0003957fb5c64675a874295fd5f7a122b21afdd2a875d1398f2`	pdf-javascript-stream	PDF /JS object 13 at offset 0x336	13110 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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