PDF malware analysis — malicious · ee80cf0cb1ec3162

MALICIOUS

PDF

1.8 KB

MD5: f637d38bd7dce3f069f87fbf6c52ec5c SHA-1: 470d978ec543973178c19cb66a96b5345500503e SHA-256: ee80cf0cb1ec31628d174596dfac97703973905e7a29432db3f612351c07f4fc

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 flags this PDF as malicious. The embedded JavaScript stream, named 'javascript_obj263984_000.js', likely contains exploit code or a downloader. The unescape() function call suggests obfuscation of the malicious payload within the 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_obj263984_000.js` `65be9aebbcb307884e39c3cfa16572597c2721fec9c39f7a46595de114847817`	pdf-javascript-stream	PDF /JS object 263984 at offset 0x197	6903 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 10 eval/decoder/string-building token(s). Carved artifact contains 3 long base64-like blob(s).

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