PDF malware analysis — malicious · 3ee772fe41b94257

MALICIOUS

PDF

6.3 KB First seen: 2026-05-10

MD5: 3a14c5e2e4b06fa9499500695a719e3b SHA-1: 3a6f329a2c3ba9942a8b461ded782f8f1cb5820b SHA-256: 3ee772fe41b9425714b321ba8decbf3dbfdc2890ff2ed3d06948f7815dedb0b5

150 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript

The PDF document contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The presence of an unescape() call within the JavaScript stream suggests obfuscation and potential malicious intent, possibly to download and execute a second-stage payload. While several URLs were extracted, they are all confirmed as benign. Due to the lack of specific script content and benign URLs, the family is unknown.

Machine Learning

Nyx PDF Classifier malicious score 0.9833

Heuristics 5

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. (matched inside decoded stream)
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
```
RandomVar3=unescape(RandomVar3);
```
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. (matched inside decoded stream)
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://www.w3.org/1999/02/22-rdf-syntax-ns# In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_002_off00000324.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x324	369 bytes
SHA-256: `e6eb3a570c0af7c677cbc3c6e21915fd1fd1ac6971fef15f4baefaf0e35cc85a`
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).
`objstm_0024_00.bin`	pdf-objstm-decoded	PDF /ObjStm 24 0 obj (inflated)	331 bytes
SHA-256: `596154e34ef031a4ff41c49e93e85766919a0c657d62f2104218c6c424f4271d`

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