diff --git a/samples/bugs/PullRequest797-pdf.js.pdf b/samples/bugs/PullRequest797-pdf.js.pdf
new file mode 100644
index 00000000..f3e25216
Binary files /dev/null and b/samples/bugs/PullRequest797-pdf.js.pdf differ
diff --git a/samples/bugs/PullRequest797-vera.pdf b/samples/bugs/PullRequest797-vera.pdf
new file mode 100644
index 00000000..71855760
Binary files /dev/null and b/samples/bugs/PullRequest797-vera.pdf differ
diff --git a/src/Smalot/PdfParser/RawData/RawDataParser.php b/src/Smalot/PdfParser/RawData/RawDataParser.php
index ec8d01e5..7268743b 100644
--- a/src/Smalot/PdfParser/RawData/RawDataParser.php
+++ b/src/Smalot/PdfParser/RawData/RawDataParser.php
@@ -198,16 +198,16 @@ protected function decodeXref(string $pdfData, int $startxref, array $xref = [],
                 // get only the last updated version
                 $xref['trailer'] = [];
                 // parse trailer_data
-                if (preg_match('/Size[\s]+([0-9]+)/i', $trailer_data, $matches) > 0) {
+                if (preg_match('/\/Size[\s]+([0-9]+)/i', $trailer_data, $matches) > 0) {
                     $xref['trailer']['size'] = (int) $matches[1];
                 }
-                if (preg_match('/Root[\s]+([0-9]+)[\s]+([0-9]+)[\s]+R/i', $trailer_data, $matches) > 0) {
+                if (preg_match('/\/Root[\s]+([0-9]+)[\s]+([0-9]+)[\s]+R/i', $trailer_data, $matches) > 0) {
                     $xref['trailer']['root'] = (int) $matches[1].'_'.(int) $matches[2];
                 }
-                if (preg_match('/Encrypt[\s]+([0-9]+)[\s]+([0-9]+)[\s]+R/i', $trailer_data, $matches) > 0) {
+                if (preg_match('/\/Encrypt[\s]+([0-9]+)[\s]+([0-9]+)[\s]+R/i', $trailer_data, $matches) > 0) {
                     $xref['trailer']['encrypt'] = (int) $matches[1].'_'.(int) $matches[2];
                 }
-                if (preg_match('/Info[\s]+([0-9]+)[\s]+([0-9]+)[\s]+R/i', $trailer_data, $matches) > 0) {
+                if (preg_match('/\/Info[\s]+([0-9]+)[\s]+([0-9]+)[\s]+R/i', $trailer_data, $matches) > 0) {
                     $xref['trailer']['info'] = (int) $matches[1].'_'.(int) $matches[2];
                 }
                 if (preg_match('/ID[\s]*[\[][\s]*[<]([^>]*)[>][\s]*[<]([^>]*)[>]/i', $trailer_data, $matches) > 0) {
@@ -216,7 +216,7 @@ protected function decodeXref(string $pdfData, int $startxref, array $xref = [],
                     $xref['trailer']['id'][1] = $matches[2];
                 }
             }
-            if (preg_match('/Prev[\s]+([0-9]+)/i', $trailer_data, $matches) > 0) {
+            if (preg_match('/\/Prev[\s]+([0-9]+)/i', $trailer_data, $matches) > 0) {
                 $offset = (int) $matches[1];
                 if (0 != $offset) {
                     // get previous xref
@@ -922,14 +922,18 @@ protected function getXrefData(string $pdfData, int $offset = 0, array $xref = [
             throw new \Exception('Unable to find xref (PDF corrupted?)');
         }
 
+        // Some files point startxref to the whitespace right before the xref keyword.
+        $startxrefOffset = $startxref + strspn($pdfData, $this->config->getPdfWhitespaces(), $startxref);
+
         // check xref position
-        if (strpos($pdfData, 'xref', $startxref) == $startxref) {
+        if (strpos($pdfData, 'xref', $startxrefOffset) == $startxrefOffset) {
             // Cross-Reference
-            $xref = $this->decodeXref($pdfData, $startxref, $xref, $visitedOffsets);
+            $xref = $this->decodeXref($pdfData, $startxrefOffset, $xref, $visitedOffsets);
         } else {
             // Check if the $pdfData might have the wrong line-endings
             $pdfDataUnix = str_replace("\r\n", "\n", $pdfData);
-            if ($startxref < \strlen($pdfDataUnix) && strpos($pdfDataUnix, 'xref', $startxref) == $startxref) {
+            $startxrefUnixOffset = $startxref + strspn($pdfDataUnix, $this->config->getPdfWhitespaces(), $startxref);
+            if ($startxrefUnixOffset < \strlen($pdfDataUnix) && strpos($pdfDataUnix, 'xref', $startxrefUnixOffset) == $startxrefUnixOffset) {
                 // Return Unix-line-ending flag
                 $xref = ['Unix' => true];
             } else {
diff --git a/tests/PHPUnit/Integration/DocumentIssueFocusTest.php b/tests/PHPUnit/Integration/DocumentIssueFocusTest.php
index 7c7fe7e6..1b40f8bf 100644
--- a/tests/PHPUnit/Integration/DocumentIssueFocusTest.php
+++ b/tests/PHPUnit/Integration/DocumentIssueFocusTest.php
@@ -36,7 +36,6 @@
 namespace PHPUnitTests\Integration;
 
 use PHPUnitTests\TestCase;
-use Smalot\PdfParser\Document;
 use Smalot\PdfParser\Parser;
 
 /**
@@ -111,4 +110,21 @@ public function testPDFDocEncodingDecode(): void
         $testSubject = '•†‡…—–ƒ⁄‹›−‰„“”‘’‚™ŁŒŠŸŽıłœšž';
         self::assertStringContainsString($testSubject, $details['Subject']);
     }
+
+    public function testParseFileWhenStartxrefPointsToLeadingWhitespaceInVeraPdfFixture(): void
+    {
+        $document = (new Parser())->parseFile($this->rootDir.'/samples/bugs/PullRequest797-vera.pdf');
+
+        self::assertCount(1, $document->getPages());
+    }
+
+    /**
+     * @see https://github.com/smalot/pdfparser/pull/797
+     */
+    public function testParseFileWithCompressedXrefObjectFromPdfJsCorpus(): void
+    {
+        $document = (new Parser())->parseFile($this->rootDir.'/samples/bugs/PullRequest797-pdf.js.pdf');
+
+        self::assertCount(1, $document->getPages());
+    }
 }