My discord Instant-Invite turned into a virus link??

[Troency]

I simply wanted to make a decent discord server since my last one was a bit messy and all over the place. So I made a new one and created and instant-invite and sent it to basically my whole friends list of 200+ friends. Eventually some of them started blocking me calling me a c * n t and other various names, some with reasons, and I had no idea what they were on about as I hadn't messaged most of them for 2+ days since I was on a holiday. Confused as I was, I asked a friend who hadn't deleted me, he said It was a virus and so did some other friends, I wish I knew how. And I think people should be more carefull as to who there inviting, setting as moderator, and check your Instant-Invite links for viruses or suspicous activity online or with a software. I might sound like a ♥♥♥♥♥♥♥♥ but I'm just confused and trying to be carefull. If anyone could give me an explanation to this It would be appreciated as I feel as confused like someone who just got abducted by an alien spaceship while watering his rotten garden. :)