PDF malware analysis — malicious · 9943d7ebbef5c162

MALICIOUS

PDF

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

MD5: 602dbd2c76b4616aa8a26080a04d9a94 SHA-1: 9b8cea051146df3e1b379ed494fccd42937f8115 SHA-256: 9943d7ebbef5c162b35e08192d25bb94568ac1546c07d03e91f61bd6b5529282

118 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript with multiple obfuscation layers, including the use of `eval()` and string concatenation. Heuristics indicate a PDF JavaScript action and an embedded JS stream, with a critical ClamAV detection for 'Pdf.Exploit.Agent-36118'. The script's intent appears to be downloading and executing a second-stage payload, as suggested by the `eval()` calls and the overall structure. The obfuscated nature of the script prevents a more precise determination of its exact actions or the specific family, but the exploit and execution pattern are clear.

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` `4e67fea06f2957f4326acd22c4a9d82eca973be7b340a652d4e9d07e76798534`	pdf-javascript-stream	PDF /JS object 13 at offset 0x336	13572 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s). Carved artifact contains 14 long base64-like blob(s).

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