PDF malware analysis — malicious · b106585986041bbc

MALICIOUS

PDF

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

MD5: 80ef2a7592d2bc408bd09c7229a3d964 SHA-1: 68af744d6db33b034c089f93b2a016aec6557a33 SHA-256: b106585986041bbc5b31529e75fc8f15273e3951451a03d88b719a8f2a5c4c64

118 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript with multiple eval() calls and string concatenations, indicating obfuscation. The ClamAV detection 'Pdf.Exploit.Agent-36118' and the heuristic firings for PDF JavaScript and eval() calls strongly suggest the exploitation of a PDF vulnerability. The script's intent is to download and execute a second-stage payload, as evidenced by the obfuscated JavaScript attempting to construct and execute code.

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` `4b875ca547abbea2fe7c0d137a265dd2f347601f3d1b05366cecc2d62a3ab1e1`	pdf-javascript-stream	PDF /JS object 13 at offset 0x336	13402 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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