It makes you an accomplice to fraud, first of all.
IRS considers this a gift. The exclusion limit is 14K per person, per year. Anything above that is taxed.
http://www.irs.gov/Businesses/Small-Businesses-&-Self-Employed/Gift-Tax.
To avoid the tax, you need six people and a method of distributing the 84K among them, so they can all cut you a check of 14K.
Any amount over a certain threshold deposited into a bank gets scrutiny. 10K used to be the magic number, I think. Scrutiny as in the IRS and the FBI (of the organization that may care) will be aware of it.