Islam teaches us to earn our living through honest work. Cheating and encouraging people to cheat are grievous sins. Everyone involved in this process is a partner in crime.
Such actions entail grave consequences for both individuals involved as well as the community as they teach sloth and laziness and discourage people from seeking to excel in their chosen area or field. They end up destroying themselves and the community for it produces mediocrity rather than scholarship and academic excellence. Islam teaches excellence, professionalism, and diligence. The Prophet said, “Allah enjoins excellence and benevolence in all things.” ( Reported by Muslim). He also said, “Allah loves everyone to excel in the work he or she is performing.” ( Reported by Tabarani and others).
Therefore, to make money through dubious and fraudulent methods is cheating. The Prophet (peace be upon him) said, “Whoever cheats is not one of us.” (Reported by Muslim).
The Prophet (peace be upon him) said, “Allah is Pure, and He accepts only that which is pure. He orders the believers as He orders His apostles: O Messengers, eat of that which is lawful and pure from the fruits of the earth and do good works; verily, I am watchful of what you do.” (Reported by Muslim).
You don’t need a mufti to tell you that the students as well those who involved in this work are cheating. They are committing a grave sin, and all of those who condone or aid them are also equally guilty.
The income or money they earn through this fraudulent work is pure filth.
The Prophet (peace be upon him) warned us against unlawful earnings: He said Allah does not hear prayers of such people. He teaches us this principle by citing the case of an individual who undertakes a journey to perform Hajj and raises his hands in the sacred sites to Allah, calling out saying: My Lord! My Lord! “How would Allah answer his prayers when his food is earned through illegal ways, his clothes are from unlawful earnings, and such income also nurtures his entire body?” (Muslim)