It is definitely possible. You could do it with a basic search and replace, I think. Or, you could iterate over text directly and do the replacement at a character level. You did not specify whether you want to use FDK or ExtendScript, each of which has differing capabilities with regard to byte-level character manipulation.
That answers your question "is it possible." If were also expecting someone to post a script, that is a different story. There have been threads about search and replace on this forum... I would suggest starting there if you need ideas.
thanks for your reply, actually i have many files with Farsi digits and i need to change those digits to Arabic then another time to Hindi so Find/Replace process will take much time to do it
i was think about ExtendScript would help me a lot about that