Run regex on PDF file. Return results to console.

RegexOnPDF.cs

// Credit: http://stackoverflow.com/questions/17601176/read-a-pdf-and-find-a-specific-column-to-add-to-a-list
// You'll need to download the iTextSharp dll and add a reference to it.

using System;
using System.IO;
using System.Text;
using System.Collections.Generic;
using System.Text.RegularExpressions;
using iTextSharp.text.pdf;
using iTextSharp.text.pdf.parser;

class RegexOnPDF
{
	public static void Main()
	{
		string pdfText = ReadPdfFile(@"C:\SomePDF.pdf");
		Regex regex = new Regex(@"Policy Number: (?<number>CSA\d{8})");

		foreach (Match match in regex.Matches(pdfText))
			Console.WriteLine(match.Groups["number"].Value);

		Console.WriteLine("Complete.");
		Console.ReadKey();
	}

	public static string ReadPdfFile(string fileName)
	{
		var stringBuilder = new StringBuilder();

		if (File.Exists(fileName))
		{
			var pdfReader = new PdfReader(fileName);

			for (int page = 1; page <= pdfReader.NumberOfPages; page++)
			{
				ITextExtractionStrategy strategy = new SimpleTextExtractionStrategy();

				string currentText = PdfTextExtractor.GetTextFromPage(pdfReader, page, strategy);

				currentText = Encoding.UTF8.GetString(ASCIIEncoding.Convert(Encoding.Default, Encoding.UTF8, Encoding.Default.GetBytes(currentText)));
				stringBuilder.Append(currentText);
			}

			pdfReader.Close();
		}

		return stringBuilder.ToString();
	}
}