HI I would like to just say that this is pretty normal but avast usually has ads for a youtube video or an ad for winning an i pad or something like that. I must say though that it was a bit strange though. But I am pretty sure that avast had something to do with this ad that was white in colour and it was saying that you could win a chrome book if you could spot the spam link in the social media page.

have a good day every one