VIC Son Married Overseas - Apply for Divorce or Annulment?

So stop sending her money.

Get the paperwork in order to file for divorce. The filing part will cost about $700. There will be some issues because he will have to serve her with the divorce application and she will need to sign it, but he can do a sole application for divorce.

After that, she has 12 months to make an application for property / asset division. The only way she can do that is to apply to a court in Australia and that will cost her lots and lots of money as she will need a lawyer. So hopefully 12 months after the divorce is sorted she will not have made a court application, then your son will be off the hook.

 

Divorce is a lengthy process - you need to be married for 2 years and separated for 12 months (included in the 2 years) before you can apply, but unfortunately I don't believe you would have grounds for annulment in this case.

 

I'm going to sound hard and harsh here, but let's be clear.
This is not a family law situation, this is fraud. Perhaps even organised crime.

I agree with @sammy01 - he should stop sending them money,
and painful as it may be for you, you should stop giving him money.

Understand this - there is no "we". You have no standing in terms of the validity of the marriage,
nor in terms of any proceedings to end it. He's an adult, as free to get scammed as he is to get married.

Understand also (painful as it is), that he will keep getting scammed as long as he chooses to.
His only option here is to harden up and cut off the money.
But, if he doesn't have the backbone to do it, there is little you can do to force him.

Now, what can you actually do?

The first thing to do is learn about his situation.
Consider whether or not the marriage is even technically valid in Indonesia.
I am not an expert in the law of marriage in Indonesia, but I would want to know
if all the Indonesian formalities were in fact completed.
Because if they were not, then at law, there is no marriage.

For example, consider how when one marries in Australia, there is often a "religious bit" (the prayers and vows and what have you)
and a "non-religious bit" - where the parties sign the Certificate and "do the paperwork".
I'd want to know if it was similar in Indonesia - that is, did they go through ALL the necessary steps?

You may find this helpful as backgrounder to the technicalities.