Yes the wallet is OK, there's no virus in it. I posted these instructions recently as to how you can allow LINDA to exist on your PC:
Go to Windows Defender Security Center, then click the Shield Icon, then Virus & threat protection settings, then scroll down to Exclusions.
Maybe make an Excluded folder on your desktop or choose an existing folder and add it to the Excluded list there. Then you can download/run the LINDA wallet into this excluded folder, and it should be able to stay there and also use the %APPDATA% folder for the data without warnings or errors.