1

On reddit I’ve seen plenty of links to -gfycat.com which seems to be a gif hosting site. I tried to scan it on Sucuri.net, but as it shows green, it also gives “content not found”.

https://sitecheck.sucuri.net/results/gfycat.com

2

There are lot of other online scanners that you can use.
I have links to several listed on my website : http://www.ache.nl