Malta`s ranking an all-time low in Corruption Perception Index [1]. It drops like the chances to getting some points in the ESC.
I'm not wondering at all. To be honest - that is not issued by foreigners and companies from abroad. When you search for corruption it will only be found at the GOV, Banks and maltese people. While foreigners are checked to the bones, maltese people can do whatever they want.
My favorite Example: As a european citizen try to get a maltese Passport (maybe because you like the country and live here for long). There is no chance unless you gonna mary a maltese. But if you show Money they just doesn't give you a simple passport! They will give you a golden Passport :)
[1]
The Shift News: Malta`s ranking an all-time low in Corruption Perception Index