Anyone can create a log file like that and sneak in 10 or so genuine private key combinations with a few coins, to make it look legit. It is probably just a elaborate hoax or someone
trying to confuse people, in making them to believe that a list of this kind can be generated to hack Bitcoin. You would not believe how much trouble people will go through to
discredit Bitcoin... this is just one of these attempts.
What is there to gain for them by discrediting bitcoin? An opportunity to get cheaper coins? I don't think that this is the best way for them as with all the time and effort they could easily make multiple times the coins they would potentially make now.
Unless it is something like governments trying to do it, but that is something I doubt greatly at this moment.