PDF malware analysis — malicious · e28b4ada7ce9d9d4

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: 9d3f96df55f5f69d495a7eb1070e7d0c SHA-1: a8842912e81044e1437c39006efda574d6d9d172 SHA-256: e28b4ada7ce9d9d40841df3ae69020c682967c3eadff44583019f0d264abe749

116 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

This PDF file was flagged by ClamAV as Pdf.Exploit.CVE_2009_0927-1, indicating it exploits a known vulnerability. Static analysis detected embedded JavaScript, including the use of String.fromCharCode, which is often used for obfuscation. The ML classifier also strongly indicated maliciousness. The primary attack vector is likely the exploitation of a PDF viewer vulnerability to execute arbitrary code.

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 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0013_001.js` `47d93e1b6ceeb0b6e80c0d27d2efb99dbe36f9f754ea5c67ebc068028f253fb3`	pdf-javascript-stream	PDF /JS object 13 at offset 0x352	4705 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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