PDF malware analysis — malicious · eb55508faa87cc6d

MALICIOUS

PDF

12.3 KB

MD5: b3818e96d6d8b5c36921eb5c85e6a6ea SHA-1: ac744c503ffa02fe85c1e837c6e92bf2d3a22159 SHA-256: eb55508faa87cc6dbe200a8a52586f9a82d7f0a1fa279cac8653ee210aaa9293

166 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: Malicious File

This PDF file was flagged as malicious by multiple engines, including ClamAV which identified it as Pdf.Exploit.Agent-36722 and Pdf.Exploit.Pdfka-9. Static analysis revealed embedded JavaScript, indicating an attempt to exploit PDF vulnerabilities. The embedded JavaScript stream is the primary indicator of malicious activity, likely serving as a downloader for further stages.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

ClamAV: Pdf.Exploit.Agent-36722 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36722
ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV

ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
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_obj0076_000.js` `c2cacd37186749e2336ccf55d73645a4160736b700f957d26aed84a563217823`	pdf-javascript-stream	PDF /JS object 76 at offset 0x369	11515 bytes
Detection ClamAV: Pdf.Exploit.Pdfka-9 Obfuscation or payload: unlikely

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