Some of the companies caught up in a massive corruption scandal at state-run oil firm Petrobras are quietly pressing Brazil’s government and judiciary to strike a “grand bargain” to minimize the legal fallout, five sources with knowledge of the talks say. The companies, which prosecutors suspect of paying out billions of dollars in bribes through service contracts they had with Petrobras, are worried the investigation is too far-reaching and could drag on for years, heavily damaging their bottom lines and Brazil’s fragile economy.