Cal. Bus. & Prof. Code § 6128
Every attorney is guilty of a misdemeanor who either:
(c) Willfully receives any money or allowance for or on account of any money which he has not laid out or become answerable for.
Any violation of the provisions of this section is punishable by imprisonment in the county jail not exceeding six months, or by a fine not exceeding two thousand five hundred dollars ($2,500), or by both.