PDF malware analysis — malicious · b09b3e5e25ba4b23

MALICIOUS

PDF

3.3 KB

MD5: 37aace611a21380fcc29da16c319f556 SHA-1: 535a9dbfa49e0115a12689b878eec7bd15d3eb85 SHA-256: b09b3e5e25ba4b2387015f167a793688329b47909d1dfab596e4b10ccde42538

106 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

This PDF file was flagged as malicious by ClamAV and a machine learning classifier. It contains embedded JavaScript, which is likely used to exploit a vulnerability within the PDF reader. The JavaScript's exact function is not fully discernible due to obfuscation, but it is the primary mechanism for delivering the malicious payload. The ML classifier's high confidence score and the ClamAV detection strongly indicate a malicious exploit.

Machine Learning

Nyx PDF Classifier malicious score 0.9999

Heuristics 3

ClamAV: Pdf.Exploit.Agent-36121 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36121
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_obj0007_000.js` `688999941b3b34adb537e791797de3fb4cfb74c54739636b7b7c6d846e5ceefb`	pdf-javascript-stream	PDF /JS object 7 at offset 0xA87	316 bytes

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