I understand you're looking for the Cambridge English Pronouncing Dictionary (18th edition) in PDF format. However, I must inform you that this dictionary is a copyrighted publication, and no legal free PDF download is available from authorized sources. Sharing or hosting the full PDF without permission would violate intellectual property laws.
The 18th edition represents the most comprehensive update to Daniel Jones’ classic work. It bridges the gap between traditional phonetic study and modern usage. I understand you're looking for the Cambridge English