PDF malware analysis — malicious · 4cac4151b37019c8

MALICIOUS

PDF

2.7 KB Created: 1945-01-01 Authoring application: 2262

MD5: e87a32e0f5baf960f725b5f8fe62af05 SHA-1: 306af7e99ceb7f6a078847fd0c2cdad7d41cf46d SHA-256: 4cac4151b37019c8fe76c72f87f6911e2cd7b9bb782fc43a97178b2b3d5fc960

126 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file was flagged as malicious by ClamAV with the signature Pdf.Exploit.Agent-36014. Static triage also indicated suspicious elements including hex escape and script obfuscation within an embedded JavaScript file. The ML classifier assigned a very high probability of maliciousness. The embedded JavaScript is likely responsible for executing the exploit and delivering a secondary payload.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

ClamAV: Pdf.Exploit.Agent-36014 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36014
Suspicious extracted artifact medium 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.
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.

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0013_001.js` `f2197d201bab2efcf35fcfef9a40b7e08da3943c194a956be9473e5e0eb9c75b`	pdf-javascript-stream	PDF /JS object 13 at offset 0x328	4798 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 10 eval/decoder/string-building token(s). Carved artifact contains 3 long hex-escaped blob(s).

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