That would tell you that the occurrence of 'MacKeeper Helper' in your Console log is not due to a regular install of this 'utility'. This is particularly true if you also ran a search (including System files*) for 'zeobit, '911' and '911bundle', in addition to 'MacKeeper", and that search came out negative. Such a result is strange on the face of it, but it is what it is.
*) Note that System files are excluded from Spotlight searches by default.
