The corresponding notice was published on the official website of the "railway workers".
The 29-year-old has already joined his new club at a training camp in Marbella, Spain.
He will perform under No. 3.
At home, Pablo played for Corinthians, with which he won the national championship, and other clubs.
He also has two matches for the Brazilian national team.
Earlier it was reported that Lokomotiv announced an agreement with Bordeaux on the transfer of defender Pablo.