Not sure where these notifications are coming from?

Hi

I have recently been getting notifications from something called Kamdroa,

I don't know what this is, its not a site or app I remember using.

I've opened my notification center and I switched off notifications for this thing, but I'm confused as to where they came from, if it is possibly a virus, or how it got into my notifications in the first place?

Any help would be much appreciated

Thankyou

I'm using a Macbook Air.