I extracted the files using tar -xzvf
And I am pretty sure this is not a problem with my tar program because this is the content of ._License.html:
Which is not too likely to be generated in Ubuntu.._License.html wrote:Mac OS X 2³åATTRµÎzå˜M˜Mcom.apple.quarantineq/0000;5557fd8a;Safari;885335AF-CEA1-4479-A750-9351D312B318|com.apple.Safari