PDF malware analysis — malicious · 61146e76af98208c

MALICIOUS

PDF

13.3 KB

MD5: 5bc67a6620e025c86d60f161c28ec470 SHA-1: ba8393f67822f8e093a4192f2d3ec41f38d56552 SHA-256: 61146e76af98208cddb0160ae12f97b4ac0c5fe5ab9e96494f645766dabc529a

110 Risk Score

Malware Insights

MITRE ATT&CK

T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF file contains embedded JavaScript that is obfuscated but appears to be designed to download and execute a payload from the provided URL. ClamAV detection confirms this is a known dropper. The ML classifier also strongly indicates maliciousness.

Machine Learning

Nyx PDF Classifier malicious score 0.9999

Heuristics 5

ClamAV: Pdf.Dropper.Agent-7423869-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7423869-0
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.
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.

URL http://www1.save-cdsecurity.rr.nu/?sxwa=l9vkxbDG7spT2M3XopirpKGa7efktJSkmKuaX5OZpJmZm%2Bbcsaqmqa6aqZWnml%2BJ0Oailaijj9Xb1eq0s8esnNWWx6Gmi9aZ

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0005_000.js` `5d71f0632085f6ba680ff717f8fa38ac48889eb831924a907a8b5b9174d5d8c9`	pdf-javascript-stream	PDF /JS object 5 at offset 0x1AE	12820 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`javascript_obj0005_001.js` `b4fa8069e331aab82f5d8f8579fd5b57f908b83e621a87c86dc71446bcb5f8cb`	pdf-javascript-stream	PDF /JS object 5 at offset 0x1D2	13104 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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