Dear; some countries accept and grant the use of an IDL withint their boundaries.

However and to be on the safe side why don't you contact the Malaysia Embassy and ask them on the validity of the driving document

Contact details for the embassy in the link

http://my.embassyinformation.com/list.php

Also you can try looking for info on the internet. The following link may be useful for you

http://www.malaysia.alloexpat.com/malaysia_information/driving_license_m...

Check it out!!

Regards!!