PDF malware analysis — malicious · ff624c6ad29e31ca

MALICIOUS

PDF

6.2 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: 0d528e9049f1e657428cdd0dd4c348a3 SHA-1: bc2db05e7ea9a56572c45b1d59f3bff121fe7cd8 SHA-256: ff624c6ad29e31ca241dd1b7a82ddd0ed33836f33d65b6a8833cb25e6044f342

116 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

This PDF file is flagged as malicious by multiple engines, including ClamAV which identifies it as Pdf.Exploit.CVE_2009_0927-1. The presence of embedded JavaScript, along with heuristics indicating obfuscation and the use of String.fromCharCode, strongly suggests that the script is designed to exploit a vulnerability within the PDF reader. The ML classifier output further supports the malicious nature of the file. The script likely attempts to download and execute a second-stage payload.

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_obj0014_001.js` `6796518725f717b38ac99117145a870acc7140982c8e3cf8966fc6fd117aa52d`	pdf-javascript-stream	PDF /JS object 14 at offset 0x486	4691 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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