That list of directories is really weird. On my machine, none of them exists, neither in ~/Library nor /Library. And I do run most of that software (Dropbox, Skype, Firefox, Chrome in the past...).
Either the malware targeted very old versions of such software and/or OSX, or somebody between the malware author and the blog writer f###ed up.
Either the malware targeted very old versions of such software and/or OSX, or somebody between the malware author and the blog writer f###ed up.