If this was a serious ad, why wouldn't they just advertise the position properly? Like name of company, aircraft type and a company email address.
I think this is more information gathering for some up to no good people. Stay away ppl.
I think it's time for AFAP to change and require that an ad must have advertise ABN or name if company. If I want to sell my car online I have to advertise the rego or last few digits if the VIN.