PDF malware analysis — malicious · 011cfe70fe348aee

MALICIOUS

PDF

37.8 KB Created: 2010-04-15 00:04:32 +04:00 Authoring application: TCPDF (via TCPDF 4.8.032 (http://www.tcpdf.org))

MD5: 9962853b7c9da4fd3f426b623caedef4 SHA-1: b3d2d5139500e73da2f109d13d69d88b5e38278b SHA-256: 011cfe70fe348aee1c5dba7ff69c0f36e83fac4729fa0c1b09393dc2241f424e

114 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The file is a PDF containing embedded JavaScript, flagged by multiple heuristics and ClamAV as malicious (Pdf.Exploit.Agent-23305). The JavaScript appears to be obfuscated but attempts to execute a command after a delay. This suggests the PDF is a dropper or exploit document designed to initiate a malicious chain of execution.

Machine Learning

Nyx PDF Classifier malicious score 0.9999

Heuristics 4

ClamAV: Pdf.Exploit.Agent-23305 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-23305
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` `0cb7a0d933d018b1604da5dd5a0a4fe8381e9f2909885906423c94be5a459a64`	pdf-javascript-stream	PDF /JS object 10 at offset 0x8CDF	1346 bytes

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