Having a criminal record does not automatically disqualify you from obtaining a Brazil visa. However, you may be required to provide additional documents or explanations so the officials can thoroughly assess your situation.
It is important to disclose your criminal history truthfully, as withholding information can lead to negative consequences, including denial of your visa or future entry into Brazil. Each case is evaluated individually, and minor offences or cases with evidence of rehabilitation are less likely to affect the decision significantly.