PDF malware analysis — malicious · b8ab18f2f9aba3e1

MALICIOUS

PDF

4.6 KB

MD5: a8d6bc0d21a0e8c9b84ce229b04dfbee SHA-1: 716c2ba80d77f24285758b1c30b5d2ec98659bd9 SHA-256: b8ab18f2f9aba3e14fa83daf46f93534c33562521f91d5a3602b42aa5d231057

108 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection for obfuscated objects and a high ML score. Embedded JavaScript was extracted, indicating an attempt to execute malicious code. The ML classifier's high score suggests a strong likelihood of malicious intent, likely to download and execute a second-stage payload.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

ClamAV: Heuristics.PDF.ObfuscatedNameObject critical CLAMAV_DETECTION

ClamAV detected this file as malware: Heuristics.PDF.ObfuscatedNameObject
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_obj0013_000.js` `74ab3f46b306728b36ee7c4593dd351896c1cdb8bbfa9cbdb76fc169822de063`	pdf-javascript-stream	PDF /JS object 13 at offset 0x318	33225 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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