Could you provide more details as to why you feel this 'font server' service is indeed some kind of malware? Simply reading that it is from some online posting can be very misleading if you don't know the source of the accusation.
Is there something going on with your phone that ties in with 'font server' being the problem?
Could you post the article, or articles, that you read that it is an actual virus (An issue being viruses, while mistakenly used generically for anything and everything these days, are actually a specific type of problem, and an actual Android 'virus' would be quite notable and publicized in a lot of otherwise valid online sources.)