What institution(s) has the power to impose non-criminal sanctions for campaign finance infractions?

Law No. 8/2012 on Legislative Election

CHAPTER XXII

CRIMINAL PROVISIONS

Article 280

Election contestants that intentionally provide falseinformation in the report on campaign funding as referred to in Article 134paragraph (1) and paragraph (2) and Article 135 paragraph (1) and paragraph (2)shall be subject to an imprisonment of a maximum of 1 (one) year and a fine fora maximum of Rp 12,000,000.00 (twelve million rupiahs).

Article 304

(1) Any individual, group,company, and/or non-government corporation that provides Election Campaignfunds that exceed the given limits as referred to in Article 133 paragraph (1)and paragraph (2) shall be subject to imprisonment for a maximum of 2 (two)years and a fine for a maximum of Rp500.000.000,00 (five hundred millionrupiahs).

(2) Each Election contestantthat uses the excess contributions, fails to report the excessive contributionsto KPU, and/or fails to send the excess contribution to the state cash no laterthan 14 (fourteen) days after the end of the Election Campaign period asreferred to in Article 133 paragraph (4) shall be subject to imprisonment for amaximum of 2 (two) years and a fine for a maximum of Rp500.000.000,00 (five hundredmillion rupiahs).

Article 305

Election contestants that are proven to have receiveddonations of Election Campaign funds as referred to in Article 139 shall besubject to imprisonment for a maximum of 3 (three) years and a fine for amaximum Rp36.000.000,00 (thirty six million rupiahs).

http://aceproject.org/electoral-advice/archive/questions/replies/286046320/230159556/Unofficial-Translation-of-Law-8-2012-on.pdf