Pdf.Dropper.Agent-7301286-0 PDF malware analysis — malicious · c5b97d8e4f5de0f8

MALICIOUS

PDF

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

MD5: d38e4d97a0c247cfae853352fd30240b SHA-1: cc0cfd8f1f9119093d7b979dbd9a19e922658ab3 SHA-256: c5b97d8e4f5de0f85eac87a14e3f8089e7c014ff0340e65ac5a3bd24229c7e4c

156 Risk Score

Malware Insights

Pdf.Dropper.Agent-7301286-0 · confidence 95%

MITRE ATT&CK

T1059.001 PowerShell

The PDF contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT and PDF_JS. The ML classifier and ClamAV detection strongly suggest malicious intent, identifying it as Pdf.Dropper.Agent-7301286-0. The JavaScript stream, despite some obfuscation, likely downloads and executes a second-stage payload, as suggested by the 'unescape()' and 'String.fromCharCode()' calls and the suspicious extracted artifact name 'javascript_obj0013_001.js'.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 6

ClamAV: Pdf.Dropper.Agent-7301286-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7301286-0
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` `b8d042a61c304ac12dacc28eb2ecbb1e5962dde5cad5cee2eceb2fdc28e709c9`	pdf-javascript-stream	PDF /JS object 13 at offset 0x1917	10961 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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