Using woocommerce_display_product_attributes

woocommerce_display_product_attributes.php

<?php

add_filter( 'woocommerce_display_product_attributes', 'extra_product_information', 10, 2 );
function extra_product_information( $product_attributes, $product ) {
	$the_value = $product->get_meta( '_any_custom_field' );
	if ( trim( $the_value ) != '' ) {
		$product_attributes['any_custom_field'] = array(
			'label' => 'Your label',
			'value' => $the_value
		);
	}
	return $product_attributes;
}