PDF malware analysis — malicious · add9a62a04313028

MALICIOUS

PDF

37.8 KB Created: 2010-04-16 01:17:53 +04:00 Authoring application: TCPDF (via TCPDF 4.8.032 (http://www.tcpdf.org))

MD5: bbd169aea729c5508e30133bc6c77afa SHA-1: 8e3cd60efddbfc5ad617a731e35dff21adf4b99a SHA-256: add9a62a04313028f410d9ade8e31c129fbbf7c03fa9f5e5cc35b5c6b3af4a83

114 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file was flagged as malicious by both a machine learning classifier and ClamAV, which identified it as 'Pdf.Dropper.Agent-7292638-0'. The presence of embedded JavaScript, indicated by multiple heuristic firings, suggests that the PDF is designed to execute malicious code upon opening. This JavaScript likely acts as a dropper, initiating a malicious chain of execution.

Machine Learning

Nyx PDF Classifier malicious score 0.9999

Heuristics 4

ClamAV: Pdf.Dropper.Agent-7292638-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7292638-0
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.
Optional Content Group with action trigger low PDF_OPTIONAL_CONTENT

Optional Content Group (layer) co-occurs with an action trigger — content can be selectively hidden from viewers or scanners while the action still fires on open

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0010_000.js` `599f59b332d2b14e6940315abe13fa7f9cc5a11653f0e4f071d5221274e4c601`	pdf-javascript-stream	PDF /JS object 10 at offset 0x8CA5	1346 bytes

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