Congratulations!
Here are the requirements for requesting Residence Authorization (there is no more VIPER; Residence Authorization from the Federal Police has replaced it):
http://www.pf.gov.br/servicos-pf/imigra … o-familiar
You and your spouse should review them together, and go together to the Federal Police. Here's a summary in English of the document list for reference only -- you should check it against the Portuguese list, and follow that one if it asks for anything different:
1. Completed application form, signed by the applicant. This is completed online at the Federal Police site, and printed out to be presented to them.
2. Clear and legible Certified copy of applicant's passport (ALL PAGES - even if blank) or equivalent travel document.
3. Clear and legible Certified copy of applicant's Entry Card, if you receive one. Most people no longer receive Entry Cards at Immigration, so if you don't receive one, don't worry about it.
4. Certified Criminal Record Check / Police Conduct Certificate issued in country where you reside, may not be more than 90 days before submission or not considered valid. This document must also be "legalized" by the Consulado-Geral do Brasil in the country of issue.
5. 2 3 cm X 4 cm color photographs of applicant (on white background) Note: sunglasses or eyeglasses which might reflect light/flash must not be worn in these photos
6. International certificate of vaccination (if requested)
7. Clear and legible Certified Copy of Birth Certificate (if requested) or Marriage Certificate, or Certidão de Casamento from the Brazilian Consulate, so that the names of your parents can be entered in the Federal Police records.
8. Proof of address (in Brazil) - phone/electric/water bill. This can be in your spouse's name.
9. Your spouse's ID Card
10. Bank receipt for payment of visa fee (GRU - Guia de Recolhimento da União)
11. Any other documents that may be requested by the Federal Police.
All official Pakistani documents except for your passport will need to be legalized at the Brazilian Consulate in Pakistan. All documents in a language other than Portuguese will need to be translated by a Sworn Translator in Brazil, and the translations be provided to the Federal Police.
Once your application is accepted, you will receive a Protocolo that you can use as evidence to apply for a Labor Card at the State Department of Labor. Your ID Card, your CRNM, will be delivered to the Federal Police office where you applied in several months. You should receive an email to go pick it up, but if you haven't heard from the Federal Police in about five months (your Protocolo has a six month validity), be sure to go back and ask about it, and to renew your Protocolo.