However, if you want a , yes: buy the official e-book from Hueber, borrow from a library, or scan a used copy for personal use.
If you are learning German, you have likely come across the popular textbook series Schritte international by Hueber Verlag. A common search among self-learners is for a "Schritte A2.1 PDF" —a digital copy of the first half of the A2 coursebook. schritte a2 1 pdf
The real value is not the file format—it is the structured learning path. Combine a legal digital version of Schritte A2.1 with free online resources, and you will pass the Goethe-Zertifikat A2 with confidence. However, if you want a , yes: buy