You can save a webpage as a PDF on a Windows computer using any installed web browser's Print menu and selecting "Save as PDF" from a dropdown menu.
In the top menu of Excel select Data > Get Data > From File > From PDF. Browse your files and select the PDF with the table in it. Now select Import. Choose the table from the list that appears and ...
To change the default PDF viewer on Windows 10, you'll need to edit your default apps in the Control Panel.