PDF malware analysis — malicious · ead43e47ed844cbe

MALICIOUS

PDF

11.2 KB

MD5: d77da1272baa49ac2f13ee01de5ab546 SHA-1: 314bed5bf4bde9c4d6b6c2398c6d6ddbc8399fe4 SHA-256: ead43e47ed844cbe9b77d830d8d4854df612c5b363dfe4df4a85a0e47f5bc7cb

88 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The ML_NYX_PDF_MALICIOUS classifier strongly suggests malicious intent. The presence of unescape() and obfuscated script content points to a downloader attempting to execute a secondary payload. The extracted artifact 'javascript_obj0007_000.js' is likely the source of this malicious script.

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` `636c020f395cc53101770c12700a3ec86b1b1f5c77e608c5a9aac4649c4599ba`	pdf-javascript-stream	PDF /JS object 7 at offset 0x233	48758 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 265 eval/decoder/string-building token(s).

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