PDF malware analysis — malicious · 2414279b8835d4a5

MALICIOUS

PDF

851 B

MD5: e52671a3226c3155c765bf6291d4e3a9 SHA-1: ad8f43fafc80bbae454cda24c4efe2d1c91a34d7 SHA-256: 2414279b8835d4a5d8a9fd7c29dd5dcec1fc02aef1e02c7f21d4032ef9181215

88 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 Command and Scripting Interpreter: PowerShell

The PDF file contains embedded JavaScript, indicated by multiple heuristics including PDF_JAVASCRIPT and PDF_JS. The ML classifier strongly flags this as malicious. The embedded JavaScript stream, named 'javascript_obj0005_000.js', is likely responsible for the malicious behavior, potentially downloading and executing a second-stage payload.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

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_obj0005_000.js` `8084367e78e964b8903a756e8afddb50a13d98c1727a88b55d3ec9b5d29a780e`	pdf-javascript-stream	PDF /JS object 5 at offset 0x156	349 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

Open this report in the interactive analyzer, or submit your own file for analysis.