After running clam it found four files called win.trojan.Xored-1
What are they? They were in Chrome cache.
According to this article, They are files from a rather dangerous Trojan virus and rootkit.
The Trojan, called XOR.DDoS installs itself onto compatible Linux systems and hides its files so the user doesn't know it's there. It uses your computer to run DDoS attacks.
However, it relies on you having not changed any default logins on your devices, which means if you have a password you're probably OK. I would delete those files and maybe look into removing rootkits just in case, however.
The Avast blog has a more detailed article on it: https://blog.avast.com/2015/01/06/linux-ddos-trojan-hiding-itself-with-an-embedded-rootkit/