The 34-year-old Brazilian forward played for Saudi Arabian club Al-Faisaly last season.
Dias started his playing career in his hometown club Sao Jose and has also played in Internacional, Brasil de Pelotas, Boavista and Vizela.
Cassiano Dias had also been linked with a move to Persepolis last season.
Gol Gohar will start the 2023-24 Iran Professional League with a match against Foolad in Sirjan on Wednesday.