Is KSD Miner legitimate or a scam?

I am not affiliated with or advertising the services I mention here in any way. In fact, I'm skeptical they're real. I recently came across something called KSD Miner on a website named "Investingincryptocurrency," which piqued my curiosity. They call it cloud mining. I don't know the ins and outs, but upon reviewing the offerings, the contracts and promised returns seem almost too good to be true. For instance, if we set aside the most expensive options, which boast extraordinarily high returns, even the cheapest contract supposedly guarantees around $25 daily. This leads me to question the validity of such offers. Cumulatively, this amounts to $226 over a mere span of just 9 days! I raise the question: where is all the money coming from? Is this cloud mining genuinely that profitable? They make it sound as easy as signing up, depositing money in a mining contract, and coming back every day to claim your profits. To my limited knowledge, mining has always been a demanding and extremely complex operation needing lots of time, energy, and attention. So, I find myself questioning the legitimacy of this operation. Is it a genuine thing going on, or is it nothing more than a scam meant to lure in the greedy and crypto-uneducated? If anyone knows anything, I'd appreciate it.