Trending @HCL; Moonlighting possible?

Yes possible, no pf deduction, no apn card use from employer for tds. Get salary not in your account. Doing since last 3 months. But it is now becoming hectic so will not continue after completing current project.

Also you can invest in a business for passive income, I have invested in a sweets shop, for a family member , only 1-2 days work during the evening I have to do ..

Yes you can do but remember to take payment in your friends or family's account.

If pf not deducted

you mean as a freelancer?