ntlmAuthenticatedWebRequest.ps1

# $ntlmUsername = "domain\username" formatted account name
# $ntlmPassword = "password"
# $urlToGet = "https://google.com"

$ntlmCred = New-Object System.Net.NetworkCredential($ntlmUsername,$ntlmPassword)
$getArr = @($urlToGet)

$client = New-Object System.Net.WebClient
$client.Credentials = $ntlmCred

try {
  $data = $client.OpenRead($getArr)
} catch [System.Management.Automation.MethodInvocationException] {
  Write-Error "An error occurred while connecting"
  Write-Host $PSItem.TargetObject
  Write-Host $PSItem.ErrorDetails
  Write-Host $PSItem.Exception
}

$r = New-Object System.IO.StreamReader($data)
$str = $r.ReadToEnd()
$r.Dispose()
Write-Host $str