PDF malware analysis — malicious · 0c0723fe040103e1

MALICIOUS

PDF

10.9 KB

MD5: 24e8311807ad41a615cb24512c67e4b3 SHA-1: 6d6a0abbab3d19b7deae813eead020d680c5b72f SHA-256: 0c0723fe040103e104e35090d05f0075bbc4a4a39184fcb4c773ba00a3187b1a

90 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file contains embedded and obfuscated JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The ML_NYX_PDF_MALICIOUS classifier strongly suggests malicious intent. The unescape() call further points to obfuscation techniques commonly used to hide malicious code. The primary function of the embedded JavaScript appears to be downloading and executing a secondary payload, as evidenced by the ML classifier and the presence of obfuscated script content. No specific malware family could be confidently identified.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits (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_obj0007_000.js` `e86c12b26ec7e3938396242f089a9016859c4fdbe84a0c721cf1b0d88854c7c2`	pdf-javascript-stream	PDF /JS object 7 at offset 0x233	48637 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 256 eval/decoder/string-building token(s).

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