Malicious PDF — malware analysis report

Static analysis result for SHA-256 4daa1b0c03341042…

MALICIOUS

PDF

7.6 KB First seen: 2026-05-11
MD5: 954183b9a803d50144adf0f8141e53d7 SHA-1: eb272c14c61400af47d6b65b2a77e30528d908b5 SHA-256: 4daa1b0c0334104283050583c9991c6e88a3d410033a261d2dcd444891f177b2
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. A high-severity PDF_EVAL heuristic firing suggests that the JavaScript code is being executed, likely to download and run a second-stage payload. The benign URLs extracted do not provide further clues. No document body text was available for analysis.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9520

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. (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
    /*fGhkjkDFhkhsfd <FDSJHFhkjkjSDFkj> FDKLFJHklfkldshfSLDf*/ eval('jubtbsb=/*fGhkjkDFhkhsfd <FDSJHFhkjkjSDFkj> FDKLFJHklfkldshfSLDf*/eval;');
  • 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)
  • 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.

FilenameKindSourceSize
stream_002_off00000328.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x328 2190 bytes
SHA-256: 7492c53f9efe3e4f173deeab61070171bac241d1e89d5e5f0a4be7fb2f7cd050
objstm_0024_00.bin pdf-objstm-decoded PDF /ObjStm 24 0 obj (inflated) 516 bytes
SHA-256: 4f7adc33af3436ab39c0e3c86719d1b5d18c656c3cedc9ec85a3d0e8182700f8

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