Pdf.Dropper.Agent-7303181-0 PDF malware analysis — malicious · c933821e30e6dfdd

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: 408497673aec6015d1741d6fc350c928 SHA-1: 3260105c397d8ce3fd1b3709256a392d0439027a SHA-256: c933821e30e6dfddb6ec922d8934109902142429c723276dd9b632c0574c48a0

126 Risk Score

Malware Insights

Pdf.Dropper.Agent-7303181-0 · confidence 95%

MITRE ATT&CK

T1059.001 JavaScript/JScript T1204.002 Malicious File

The file is identified as a malicious PDF by ClamAV (Pdf.Dropper.Agent-7303181-0). Static analysis revealed embedded JavaScript, indicated by PDF_JAVASCRIPT and PDF_JS heuristics. The JavaScript stream, identified as 'javascript_obj0013_001.js', likely contains obfuscated code that attempts to download and execute a secondary payload, as suggested by the PDF_UNESCAPE and PDF_FROMCHARCODE firings. The presence of these indicators strongly suggests a dropper functionality.

Heuristics 6

ClamAV: Pdf.Dropper.Agent-7303181-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7303181-0
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` `9060a19790a631907dbd80b5f3166fa1214d8adc11dad600e5944f7faaed6206`	pdf-javascript-stream	PDF /JS object 13 at offset 0x1917	10719 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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