Two initial thoughts on what Iran might have known that global elites might be willing to line up to pay them hush money:
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Elitists' plans for an ELE / WW3 / Population Culling through bio warfare.
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(going out on a limb here) Breakthrough energy technology, aka Zero Point Energy applications for electrical power, antigravity propulsion, healing, etc. There is/was an engineer named M Keshe from Iran who left that country (not sure if it was his choice) and has set up shop in Italy (just search for 'Keshe Foundation').
Keshe makes a lot of claims that haven't been well-received and my personal impression is that he's a fraud. However it's possible the Iranians know more about him or his technology than I do. If the Iranians (whether through Keshe or independently) are sitting on tech that would upset the petrofuels economy, the secret-ness of the secret space programs (by allowing every po-dunk country like Bangladesh have a space program), and Big Pharma (by curing disease with ZPE), then maybe elites would be willing to pay them off to keep it under wraps.