Script or utility to export/extract files from varbinary(max) column in SQL

I have PDFs stored in a SQL database, some are compressed and some are not. I an export just fine but I cannot view the compressed ones. When I "check the file type" on the compressed files, I'm told it is a ZLIB file. I don't know how to uncompress these. More info: I can export and view all files that are not compressed just fine with this script. The ones that are compressed I can not open or extract, I've tried winzip, 7zip, gzip, 9zip, securezip, etc -- all say it's an unrecognizable format... I don't know how the files were inserted (it was a software that I don't have access to). Tell me what you can do for me and how much you will charge. Is there a command I can type into SQL to export the compressed files uncompressed or do I need an app to run in the command line after the export or something else? DECLARE CURSOR_ProductIds CURSOR FOR (select top 10 [login to view URL] from ViewDocumentManagement v inner join RawAttachment c on [login to view URL] = [login to view URL] where [login to view URL] = '1' ) DECLARE @ProductId varchar(50); OPEN CURSOR_ProductIds FETCH NEXT FROM CURSOR_ProductIds INTO @ProductId WHILE (@@FETCH_STATUS <> -1) BEGIN DECLARE @ImageData varbinary(max); SELECT @ImageData = (SELECT convert(varbinary(max), attachmentcontent, 1) FROM [login to view URL] WHERE attachmentuid = @ProductId); DECLARE @Path nvarchar(1024); SELECT @Path = 'c:\temp'; DECLARE @Filename NVARCHAR(1024); SELECT @Filename = (SELECT attachmenttype + '_' + filename FROM ViewDocumentManagement WHERE attachmentuid = @ProductId); DECLARE @FullPathToOutputFile NVARCHAR(2048); SELECT @FullPathToOutputFile = @Path + '\' + @Filename ; DECLARE @ObjectToken INT EXEC sp_OACreate '[login to view URL]', @ObjectToken OUTPUT; EXEC sp_OASetProperty @ObjectToken, 'Type', 1; EXEC sp_OAMethod @ObjectToken, 'Open'; EXEC sp_OAMethod @ObjectToken, 'Write', NULL, @ImageData; EXEC sp_OAMethod @ObjectToken, 'SaveToFile', NULL, @FullPathToOutputFile, 2; EXEC sp_OAMethod @ObjectToken, 'Close'; EXEC sp_OADestroy @ObjectToken; FETCH NEXT FROM CURSOR_ProductIds INTO @ProductId END CLOSE CURSOR_ProductIds DEALLOCATE CURSOR_ProductIds