PDF malware analysis — malicious · dd49703c8988ec9c

MALICIOUS

PDF

6.4 KB Created: 2009-10-25 20:35:22 Authoring application: Scribus 1.3.5svn (via Scribus PDF Library 1.3.5svn)

MD5: 51b836c02ae2591946791d2ada323c37 SHA-1: f189e289aca45979e5e3d8b87103cfc1a1c782a4 SHA-256: dd49703c8988ec9c17b2dcb205a18d5dc857bb6e98d50ac449a996538b43dcc2

126 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including 'PDF_JAVASCRIPT' and 'PDF_JS'. The 'PDF_UNESCAPE' and 'PDF_FROMCHARCODE' heuristics suggest obfuscation within the JavaScript. ClamAV detection as 'Pdf.Exploit.Agent-13715' strongly suggests malicious intent. The embedded JavaScript is likely responsible for exploiting a vulnerability within the PDF reader to execute arbitrary code, which is a common technique for delivering further malware.

Heuristics 6

ClamAV: Pdf.Exploit.Agent-13715 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-13715
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` `e04549d83146ded5b0dc720010e306ef12bf5d6cf0aa15c9c6c8cbe15d755e6a`	pdf-javascript-stream	PDF /JS object 13 at offset 0xC11	11257 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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