PDF malware analysis — malicious · 5839d9f593d7c1bb

MALICIOUS

PDF

9.6 KB Created: 2009-04-05 09:28:49 Authoring application: PWUxtFavcpyABhDdp (via UChZfDKYLBJwOd)

MD5: b71d15c6946588e2f27466d7075a6c25 SHA-1: 02e251596223d6f6f2b3423400a5ef3162a46887 SHA-256: 5839d9f593d7c1bb9cfec63ded7f9b4e540575f2692ea52b0437a52a95aaa945

108 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The file is a PDF identified by ClamAV as Pdf.Exploit.Agent-35572. Static analysis detected embedded JavaScript, which is a common technique for exploiting PDF vulnerabilities. The ML classifier also strongly indicated maliciousness. The embedded JavaScript is likely responsible for downloading and executing a second-stage payload, although the specific script content was truncated and obfuscated, preventing a more detailed analysis of its actions.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

ClamAV: Pdf.Exploit.Agent-35572 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-35572
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.
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_obj0009_000.js` `9933c7217cb62ad2db536a94e1fc935ada212a727a4beffea8baeab4ecb93271`	pdf-javascript-stream	PDF /JS object 9 at offset 0x761	7172 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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