Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5e7f947de7652a1…

MALICIOUS

PDF

7.8 KB First seen: 2026-05-10
MD5: 7728a87111d965d58e98c9352cb09c90 SHA-1: 4453f0f55c0e833124406a15a9b9e9c96b6777c3 SHA-256: e5e7f947de7652a181c6d2d704836ba9f0a667be0321bc86145a832106852f95
148 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 JavaScript/JScript

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The presence of an eval() call within the JavaScript stream (PDF_EVAL) suggests that the script is designed to execute arbitrary code, likely to download and execute a second-stage payload. The document body is heavily obfuscated and does not provide clear textual lures. No specific malware family could be identified.

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(hvkoa6); /*fGhkjkDFhkhsfd <FDSJHFhkjkjSDFkj> FDKLFJHklfkldshfSLDf*/
  • 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 2408 bytes
SHA-256: 4ff83aff9231ccfdaa40ace801265debee81c15da20b885e0cc545dc92280859
objstm_0024_00.bin pdf-objstm-decoded PDF /ObjStm 24 0 obj (inflated) 507 bytes
SHA-256: 4d36dc8ff4a43d6491673b71bb8ed4be197a6acaabcf74dfec1e1b77ded712ea

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