You are dealing with international trade. Despite having all the documents, BNM may suspect your company is
1. Over invoicing or under invoicing of goods
2. Falsely described of goods
3. Over or under shipment of goods
i.e. Money laundering
Also, Russia has been under United Nations Sanctions since 2014, and Malaysia follows the United Nations' resolution.
http://amlcft.bnm.gov.my/AMLCFT04.html
Problems in Malaysia!, Expat problems