PDF malware analysis — malicious · 2434ec67c6d10cd6

MALICIOUS

PDF

6.1 KB Created: 2008-09-07 22:47:39 Authoring application: Scribus 1.3.3.12 (via Scribus PDF Library 1.3.3.12; modified using iText 2.1.7 by 1T3XT)

MD5: 28607968dcb9bb6189542b4d8811a8f7 SHA-1: 6b866e7ce0a17abe00c61b03fb82e8289c443db0 SHA-256: 2434ec67c6d10cd6477ddcd53c594028c04b5896222d14d8428ef20b4af22ac9

118 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The critical ClamAV detection for 'Pdf.Exploit.CVE_2009_0927-1' strongly indicates exploitation of a known PDF vulnerability. The presence of embedded JavaScript streams and heuristics related to JavaScript actions and String.fromCharCode further support this. The ML classifier also flagged this PDF as highly malicious. The embedded JavaScript is likely responsible for downloading and executing a second-stage payload, though its exact function is obfuscated.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 5

ClamAV: Pdf.Exploit.CVE_2009_0927-1 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.CVE_2009_0927-1
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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0013_001.js` `8d8fa6c8df9446f44e49df07411b55282a45d51a93bca23bdb4b35ff5bffb8b6`	pdf-javascript-stream	PDF /JS object 13 at offset 0x352	4693 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).
`javascript_obj0013_002.js` `8b5f799119b1daaab2c7d4aa13938bcb51eec675c4c3d01db1f7311f7383d387`	pdf-javascript-stream	PDF /JS object 13 at offset 0x372	5389 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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