Determining if a PDF File with Cloud File path is Password protected or Not (path starting with https:\\)

I am Using DotNetZip (from NuGet Package). This will normally work for a File path having ("@C:) but once if use the Cloud File Path like (https:) it is giving me IBM437 error.I can use this package but need to introduce some encoding which is the other problem.

I tried using SharpZipLib (another NuGet Package) but couldn’t find any information on internet related to it for a Cloud File Path. (http:).

I also tried Spire PDF but it throws File doesn't exist (Parameter 'fileName') error for password protected PDF.

URL’s for NuGet Packages -DotNetZip - https://www.nuget.org/packages/DotNetZip/SharpZipLib- https://www.nuget.org/packages/SharpZipLib.NETStandard/

Please let me know if any more information is required.