Windows Desktop App Development: PDF Viewer

I need a freelancer who can create a Windows-based desktop application that serves as a PDF viewer. The specifics of the project are detailed in the attached PDF file.

Key Aspects:
- User Access Control: The application will need to support multiple users, each with different permissions.
- UI Design: While the exact user interface style hasn't been decided, a modern and minimalist approach could be beneficial.

Ideal Skills:
- Proficiency in Windows desktop application development.
- Familiarity with PDF handling libraries and tools.
- Experience with designing user access control systems.
- Skills in creating modern, minimalist user interfaces.