I understand you're looking for an English PDF version of (שורשי השמות), a classic work of Kabbalah by Rabbi Moshe Zacuto (known as the Ramaz).
Shorshei ha-Shemot is an alphabetical compendium that catalogues thousands of Holy Names of God, angels, and celestial forces. Unlike theoretical Kabbalah, which focuses on the structure of the Sefirot, this work is a manual for . It details the origin of these names—often derived from specific Torah verses—and provides precise instructions on their use for protection, healing, and spiritual elevation. Key Features of the Work shorshei ha-shemot english pdf
There is no single "official" free PDF for the entire work in English. However, of an English translation has been found on Specific Studies: I understand you're looking for an English PDF