Cal. Civ. Code § 1669.7

A contract for the payment of money or other consideration in violation of Section 132.5 of the Penal Code is void as contrary to public policy. The Attorney General or the district attorney of the county in which a violation of Section 132.5 of the Penal Code occurs may bring a civil action, or intervene in any civil action, to enjoin the enforcement of a contract that violates that section.