PDF malware analysis — malicious · b48a0523f311a591

MALICIOUS

PDF

15.9 KB

MD5: 9d06e3dc3645d0ba8dee44717fd64e51 SHA-1: 13ccefd919c56a3b95b9b06e661ca7445ae03abc SHA-256: b48a0523f311a5916ab5df67d7a5d04d199ebc0b650daf4e4c2c9fe654365045

108 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript

The PDF contains embedded JavaScript, as indicated by multiple heuristic firings including 'PDF_JAVASCRIPT' and 'PDF_JS'. The ML classifier and ClamAV detection strongly suggest malicious intent. The embedded JavaScript file, 'javascript_obj0006_000.js', is likely responsible for executing the malicious payload, potentially exploiting a PDF vulnerability.

Machine Learning

Nyx PDF Classifier malicious score 0.9912

Heuristics 4

ClamAV: Heuristics.PDF.ObfuscatedNameObject critical CLAMAV_DETECTION

ClamAV detected this file as malware: Heuristics.PDF.ObfuscatedNameObject
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.
Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE

One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0006_000.js` `86833a7af1c3df3de9e51a226756594533e5c4fe5093632b04f3adf3dc31da83`	pdf-javascript-stream	PDF /JS object 6 at offset 0x19C	17305 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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