However, the firm claims to offer returns of 6-8% p.a. but fails to specify how it is able to do so.
The article writes long, a fairly experience finance person, but he didn't find out that UBB amanah is doing backend financing to banks and other creditors?

UBB is a registered Trust Company under the Trust Companies Act (1949). Also, their regulator is the Companies Commission of Malaysia (SSM).
Quick search gives this, UBB is a registered Trust Company under the Trust Companies Act (1949) and is regulated by the Companies Commission of Malaysia (SSM). It does distort the meaning by a fair bit. The company is Malaysian company and its domicile in malaysia hence registered with SSM.

In regard to the % return, I see net returns of 6% which is fair. The article writes a management fee of 3%, which might be old/outdated. I personally saw the latest trust to be a net percentage return excluding management fees.

Heard from? Source?

I have 3 trusts with UBB as well. One maturing end of this year. I didn't hear any news personally until I read some comments here. Happy to be updated on the boom news if any.