Final answer:
If the PDF download goal conversion is set up to track unique events in web analytics, then multiple downloads by the same user in one session would count as one conversion, which means only one goal conversion will be recorded.
Step-by-step explanation:
In the context of web analytics, when a goal conversion is defined by a specific action, such as the download of a PDF, it will generally depend on how the goal is set up. If the goal is set to record unique events, then multiple downloads by the same user in one session will count as one conversion. However, if the goal is to count all events, then each download could be considered a separate conversion. Given that we are discussing a singular goal (goal X), and assuming that it is set to record unique events as is typical in many analytics platforms, the answer would be one goal conversion recorded, despite the number of downloads.