This is the most common confusion. The liturgical language of Ethiopia is (similar to how Latin is used in Catholicism). Very few people speak Ge’ez natively today.
Therefore, a generally comes in two forms:
If you cannot find a single "complete" PDF, you can find the unique books (not found in standard Protestant or Catholic Bibles) individually in academic translations: 81 Biblical Books in Ethiopian Tradition | PDF - Scribd
The Ancient Ethiopian Bible: Ethiopic Scriptures, Ge'ez Manuscripts, Ethiopian Orthodox Tradition, Lost Biblical Texts—Sacred Writings of the Ancient Ethiopian Church