PDF malware analysis — malicious · 2b411aa0d83c6a39

MALICIOUS

PDF

6.8 KB First seen: 2026-05-11

MD5: bd9f1f35635329b85463d3c7ebe1eb3b SHA-1: 928321ea0e69a5750e82e0edca1809e7e5469261 SHA-256: 2b411aa0d83c6a3941126bf03cca2e02071c1db41f4d09b5957290f69298e02c

150 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. The script utilizes an unescape() function, suggesting obfuscation and potential malicious intent. While no specific URLs or further script content were extracted, the presence of JavaScript within a PDF commonly indicates an attempt to download and execute a secondary payload or exploit a browser vulnerability. The benign URLs found are likely standard PDF metadata and do not indicate malicious activity.

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
```
RandomVar1=unescape(RandomVar1);
```
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_off00000327.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x327	1800 bytes
SHA-256: `6847e5f36a30f2eedf43b284e3f249a7abc10a0fc6dd1bd227d534170d50adc7`
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).
`objstm_0024_00.bin`	pdf-objstm-decoded	PDF /ObjStm 24 0 obj (inflated)	331 bytes
SHA-256: `d8daa288991714edf518eee11f967fd1f4d4839d8f9430737deab32759a114b8`

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