PDF malware analysis — malicious · 2792117eabaa4cb1

MALICIOUS

PDF

9.9 KB Created: 2009-10-04 13:45:55 Authoring application: Scribus 1.3.5svn (via Scribus PDF Library 1.3.5svn)

MD5: 206b9f2bea2260f6937671ca2b5d3331 SHA-1: e548084928b311db290c341258768a9b3328a184 SHA-256: 2792117eabaa4cb141d2ad597161371d2ea5b2b380005426fa8c37058b6e0127

158 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file was flagged by ClamAV as 'Pdf.Dropper.Agent-7241493-0', indicating it functions as a dropper. Heuristics indicate the presence of embedded JavaScript, including the use of 'unescape()' and 'String.fromCharCode()', suggesting obfuscation. The ML classifier also strongly indicated maliciousness. The primary function appears to be downloading and executing a second-stage payload, as is typical for dropper malware.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 6

ClamAV: Pdf.Dropper.Agent-7241493-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7241493-0
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits (matched inside decoded stream)
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. (matched inside decoded stream)
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` `104532633e0ad35102783628277df911f93e2ed97ee8b76ad36f1c5b6b8d4c5b`	pdf-javascript-stream	PDF /JS object 13 at offset 0x1917	11313 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

Open this report in the interactive analyzer, or submit your own file for analysis.