PDF malware analysis — malicious · 230a33162012cbad

MALICIOUS

PDF

8.4 KB

MD5: c34495f5b4f45c43c32f3877fd2e8d2c SHA-1: dae522e907f87c29faae6fe54787bc32559bec1e SHA-256: 230a33162012cbad66acf69e8eb57f83d08e3e875fdb8c4e53b3f1d59cb2cc5b

128 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 Command and Scripting Interpreter: PowerShell T1204.002 Malicious File: User Execution: Malicious File

The PDF contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The PDF_LAUNCH and PDF_EVAL heuristics suggest that this JavaScript is used to execute arbitrary code, likely to download and execute a second-stage payload. The ML classifier strongly supports the malicious nature of this PDF. No specific family could be identified.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 5

Launch action high PDF_LAUNCH

PDF contains a /Launch action with an unresolved or extension-less target — treat as potentially dangerous
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution (matched inside decoded stream)
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_obj0027_000.js` `d92a23a09a375d7ebf77058bada68e1dcf0b07edbca3814e139203d5be8c4fef`	pdf-javascript-stream	PDF /JS object 27 at offset 0x1709	3355 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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