Klett sells the official e-book version (blinklearning platform). This is an interactive PDF where you can type answers directly into the document. It includes all audio. Search for "Netzwerk Neu A1 Intensivtrainer BlinkLearning." This is the safest way to get a high-quality digital file.
Most free PDFs floating around are scanned copies. The resolution is often terrible. Pages might be upside down, missing, or watermarked. You cannot write in a scanned PDF easily. Furthermore, many files claiming to be the "Intensivtrainer" are actually just the answer keys from the teacher's manual. netzwerk neu a1 intensivtrainer pdf
The A1 grammar focus includes: