D1 and D2 do handle things differently. However, in this case, the rules are similar. From the
D2 manual:
13.4.1 Printed recruiting Materials. An institution may not provide athletically related recruiting materials (including electronic mail and facsimiles) to a prospective student-athlete until September 1 at the beginning of the prospective student-athlete’s junior year in high school. Violations of this bylaw shall be considered institutional violations per Constitution 2.8.1; however, they shall not affect the prospective student-athlete’s eligibility.
13.4.1.1.1 Permissible Date. An institution may provide educational information published by the NCAA (e.g., NCAA Guide for College-Bound Student-Athlete), institutional camp brochures (see Bylaw 12.5.1.7.1), questionnaires and nonathletically related recruiting materials (e.g., institutional admissions publications, academic publications, student services publications) to a prospective student-athlete at any
time.
So a brochure about an athletic program, as opposed to a camp brochure, is a "mistake", and should not be sent to you. However, even if the NCAA were to take notice of this, your eligibility is not impacted. Note that a camp brochure could contain information about the camp and its staff, which could include the coach's record at the D2 school, the D2 school's facility, nearby or on-campus attractions, etc. Are you sure it was a recruiting brochure?
The "prospect profile" is a questionnaire, and is legal.