Solution
The Apache foundation created a Java library that can extract the text from a PDF file, among other things, called PDFBox. You can
download the latest version of PDFBox Command Line tool to call it within LabVIEW using the System Exec.vi. An example VI that uses the PDFBox Command Line Tool is attached on the bottom of this article, to use it, simply browse to the PDFBox-app-x.x.x.jar file in the "Path to .jar" control, browse to the PDF file you wish to convert to text in the "Path to PDF" and browse to the path where you want to create the text file in the "Text file path" control.