PDF malware analysis — malicious · 251f1ee07ee73425

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: 94ad420eff93c6b05c4f1469b2f8df95 SHA-1: 56fdc0d7e77a4e41936c94739a91fbd51d7ad4d8 SHA-256: 251f1ee07ee73425190b0141a307b75e8ff2fce3994db8b76d660e86adec7e3d

126 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript T1566.002 Spearphishing Attachment

The PDF contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT and PDF_JS. The ClamAV detection 'Pdf.Dropper.Agent-7240293-0' strongly suggests a dropper functionality. The JavaScript is obfuscated using unescape() and String.fromCharCode, typical for malware attempting to hide its payload. The primary function appears to be downloading and executing a second-stage payload, consistent with a dropper's behavior.

Heuristics 6

ClamAV: Pdf.Dropper.Agent-7240293-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7240293-0
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` `16a83a9d49015ee81438884ac47afb9fa3293f3081e6e82953e982030b5a635e`	pdf-javascript-stream	PDF /JS object 13 at offset 0x1917	11603 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.