website - removal of malware

My 2 websites prime-view-insight.com and stefanlanger.net (which are both hosted on one package) are malware infected and this needs to be cleaned/removed. This needs to be done via ftp access. Further, I suspect the issue arises due to some plugins, which may have security issues. These need to be found out and adressed by removal or substitution. This should be easy and fast for someone with experience and the right tools.