You're looking for a free PDF dictionary of philosophy by Nicola Abbagnano in Spanish. Here's some information that might help:
The "Diccionario de Filosofía" (Dictionary of Philosophy) is one of Abbagnano's most famous works. The dictionary was first published in Italian in 1961 under the title "Dizionario di Filosofia". It has since been translated into several languages, including Spanish.
The Spanish translation of Abbagnano's dictionary, also titled "Diccionario de Filosofía", was published by Editorial Paidós in 1972. The translation was done by Luis M. Bello and others.