PDF malware analysis — malicious · b8bdcc9e1d3375d1

MALICIOUS

PDF

14.3 KB Created: 2009-06-24 11:01:25 Authoring application: nBOYCMxYveSuqXlU (via AshcSlYLPGpzgKB)

MD5: 40e2c1d815f0f4e4003d5a4a16700c98 SHA-1: 340b8953a6685f1266e6b5ab2e41e0806e8231a6 SHA-256: b8bdcc9e1d3375d18a72a2d26cabe3660818d69a01792a7f249e69dce181ddef

86 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The ClamAV detection 'Pdf.Exploit.Agent-35572' strongly suggests a known PDF exploit. The embedded JavaScript file 'javascript_obj0007_000.js' is the primary artifact, likely responsible for downloading and executing a secondary payload. The document body text is generic and does not provide specific lures.

Heuristics 5

ClamAV: Pdf.Exploit.Agent-35572 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-35572
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.
String.fromCharCode low PDF_FROMCHARCODE

String.fromCharCode found — used to construct payload strings dynamically. Common in benign JavaScript libraries for codepoint manipulation, so this alone is informational; weaponised use is also caught by the dedicated fromCharCode-stage and exploit-shape 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_obj0007_000.js` `fb17fffe61a8a2267867fe2734ccbc537cba0b199ae01d0727194aa37d4b2022`	pdf-javascript-stream	PDF /JS object 7 at offset 0x29D	13223 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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