PDF malware analysis — malicious · b896104c3ef21d20

MALICIOUS

PDF

9.5 KB

MD5: aaefa08f4571982c750eddf08960d184 SHA-1: 3fe89969ae195866f6c3552019409f9db7a2a33c SHA-256: b896104c3ef21d20de35e4a4659bc71172162afd8843c803ab7506d52c7356cc

148 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file contains embedded JavaScript with an eval() call, flagged by heuristics as malicious. ClamAV also detected it as Pdf.Dropper.Agent-1828905. The embedded JavaScript is likely responsible for downloading and executing a second-stage payload, which is a common dropper behavior. The ML classifier strongly supports the malicious verdict.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 5

ClamAV: Pdf.Dropper.Agent-1828905 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-1828905
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution (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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0016_000.js` `d5c1a6aa4028c29987d8ed50634517ad956ba08f0bd7385e3bb96e559ce192cb`	pdf-javascript-stream	PDF /JS object 16 at offset 0x2046	146 bytes
`stream_006_off00002241.js` `4289b42c9fcbfe4dc4159e64fbfb9857982871902ba3c8cc599f7819f23b49e0`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x2241	331 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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