PDF malware analysis — malicious · d6610c9c3b0c7651

MALICIOUS

PDF

2.3 KB

MD5: 0a46289f26da20a96d1cf564af238f15 SHA-1: b7e5e3cd7817399a931061b3a0d48b1de9886969 SHA-256: d6610c9c3b0c7651d1d3401f1aaaed0d85284bdc2c0d6434052e03879b19df19

88 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file contains embedded JavaScript streams, flagged by multiple heuristics including ML classification. The JavaScript uses functions like unescape() and appears to be obfuscated, suggesting it's designed to download and execute a secondary payload. The presence of two JavaScript files indicates a complex execution chain.

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
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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0007_000.js` `b0dbcffea34c51d41af61c9a8111c23effe0a82fe14717499b239a95ddaa3a99`	pdf-javascript-stream	PDF /JS object 7 at offset 0x26D	1504 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 eval/decoder/string-building token(s).
`javascript_obj0007_001.js` `8da98ff0421d415073e69c83caf15714f09e54c05e04dd9f2be6e63a5efa9756`	pdf-javascript-stream	PDF /JS object 7 at offset 0x26D	884 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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