Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2f095c0eae19cea…

MALICIOUS

PDF

6.1 KB First seen: 2026-05-10
MD5: 0b2e72725683fbe5d6d0adedf8f03b52 SHA-1: b455352ced4fd3b8b080f8c350b1f6da235c83d9 SHA-256: e2f095c0eae19ceaff1da028e6008f5afb989dce8817d7e4ce98d398c6ee7cdf
148 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 Command and Scripting Interpreter: PowerShell

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The presence of an eval() call within this JavaScript (PDF_EVAL) suggests that the script is likely obfuscated and intended to execute arbitrary code, potentially downloading a second-stage payload. While no specific URLs were flagged as malicious, the embedded artifact 'objstm_0023_00.bin' is suspicious. The confidence is moderate due to the lack of directly malicious URLs and the obfuscated nature of the script.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9761

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
    eval(hvkoa6); /*lHmIMuDeB <HGjfdPFDofd> jREOoOoujVVfAY*/
  • 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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objstm_0023_00.bin pdf-objstm-decoded PDF /ObjStm 23 0 obj (inflated) 386 bytes
SHA-256: 13464ee390e7cecac02b14b67bd9c03f9c6fbc65ee8940039e4799af9dc5fd4e

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