dsidevice.domain_not_set.invalid is the name on the certificate. That's not the name of a real website. This means that something else is making that certificate.
If you Google that name, you'll see that it's used when some Internet routers lose their connection and they hijack the https connection to give you an error page. Since it's an https connection, and it's not a valid certificate you get the error.
The idea that Linux is not susceptible to malware is a really dumb take, in my opinion. I work in security and see Linux machines get popped all the time. Also, wine is good enough that malware will run under it.