List files from a folder on a computer on the network in PHP

I need to search for .pdf files that are distributed on some Windows computers on a network. I would like to, after that save and display this file to the user.

It happens that due to storage problems I can not centralize these files on a single data server at the moment, so I'm trying a solution in PHP.

I'm using the following code:

$iterator = new RecursiveIteratorIterator(
            new RecursiveDirectoryIterator("\\10.32.247.118\Processos digtalizados"), 
            RecursiveIteratorIterator::SELF_FIRST);

However, the following error is being returned:

Fatal error: Uncaught exception 'UnexpectedValueException' with message 'RecursiveDirectoryIterator::__construct(\10.32.247.118\Processos digtalizados,\10.32.247.118\Processos digtalizados): Access to Denied. (code: 5)'