PDF malware analysis — malicious · b84d6d7ff047b50a

MALICIOUS

PDF

12.3 KB

MD5: b77653fd5f0c7e76abd5a8f1e0e17de5 SHA-1: 76ce5721e16333db830062d153d672b9d06480d3 SHA-256: b84d6d7ff047b50a5a7f8de6b1a6b501cd880416b3719dba2ffa5c9f36aa5565

166 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: Malicious File

The PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV detecting it as Pdf.Exploit.Agent-36365. It contains embedded JavaScript, indicating an attempt to execute malicious code upon opening. The primary attack vector appears to be exploiting a PDF vulnerability to run this script.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

ClamAV: Pdf.Exploit.Agent-36365 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36365
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` `a65d16a15f0a321d46776af952bd42327ac5a03bd5a4a5f34fa4824ddae452e9`	pdf-javascript-stream	PDF /JS object 76 at offset 0x369	11519 bytes
Detection ClamAV: Pdf.Exploit.Agent-36364 Obfuscation or payload: unlikely

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