Since this is a publication largely overseen by the Saudi government, it is often distributed for free for non-profit educational use. Here are the best methods to find the PDF:

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(literally translated as The Clarified Exegesis or The Simplified Commentary ) is a contemporary book of Quranic interpretation. It was prepared by a group of elite Islamic scholars under the direct supervision of the King Fahd Complex for the Printing of the Holy Quran in Medina, Saudi Arabia.

In your search, you will likely encounter resources that contain the Arabic text alongside English translations. While a single, universally distributed official PDF of the English translation can be harder to pin down due to copyright and the project's official nature, several legitimate pathways exist.