PDF malware analysis — malicious · 2836dda2950bffd5

MALICIOUS

PDF

10.8 KB

MD5: db9223e3ddb9bd28222de588f866f227 SHA-1: 0d99628bf0eaa9bfb15511c15b60c4799f36d5c1 SHA-256: 2836dda2950bffd5ca701471fc936dddbb8aefd28c1222ce537e155877a7dba1

88 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT and PDF_JS. The ML classifier strongly flagged this PDF as malicious. The extracted JavaScript artifact, javascript_obj0007_000.js, is obfuscated and likely responsible for downloading and executing a second-stage payload. The presence of unescape() further supports the obfuscation technique.

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` `c8c5d2503cf92e20560bfb5f96582571b4e98273329cbc2da99711e624d76c25`	pdf-javascript-stream	PDF /JS object 7 at offset 0x233	47393 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 242 eval/decoder/string-building token(s).

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