Why there are affiliate links at my Organic results?

I was monitoring my GA Organic results and noticed a huge increase at the last 3 days.
Further examination of this shows that there are dozens of landing page links coming from affiliates sites, at the format of: /?click_idxxxxxx

Although it’s fine to have traffic from affiliate sites, as my company is cooperating with such sites, I don’t know if it’s normal to have them appearing under the Organic channel of the Google Analytics.
I mean, if a visitor clicked at one of these links while navigating an affiliate site, then it should count as Direct or Referral traffic and not as Organic.

Any ideas?