Not just fake Covid Test report bruh but Fake IELTS, Degree, etc. as well. A large portion of those so called students pay a large sum and easily get a doctored IELTS test result as well (through some agents/consultancies).
It is a backend process where some agent from the BC/IDP manually alters the result (depending on the money paid) in accordance to the college/university expectation and the updated score will show up in the TRF later. There is a big racket run by some dudes from the IDP/BC partnering with many consultancies.
Recently, in the year 2020, the Niagara college of Canada busted this and found some students who can hardly say where they are from (in English) but have exceptional IELTS scores. Those 'so-called' students were then asked to re-write and many were supposedly deported with a ban after they were not even able to get a lower grade
My school friend's brother (father is a business magnate in Punjab, India) did the same and is now a PR (got it through the CEC draw when the cut off was around 380). The guy can hardly say about his hometown in English but is a Permanent Resident now.
One day when I got the chance to talk to him, I asked about this behavior and he said that 1000s of students (especially from the northern part of my country) easily get a doctored IELTS by paying a huge sum and flock off to Canada and this is very very normal. I then got fed up and disconnected the call.
I really feel bad that such defaulters bring a very bad reputation to India and to my of us who are immigrating professionally.
https://www.thestar.com/news/canada/2018/12/08/400-students-in-india-told-to-retake-language-tests-after-niagara-college-flags-concerns.html