diff --git a/samples/bugs/rawdata/PullRequestNearbyObjectHeaderOffset.pdf b/samples/bugs/rawdata/PullRequestNearbyObjectHeaderOffset.pdf
new file mode 100644
index 000000000..950fb8f57
Binary files /dev/null and b/samples/bugs/rawdata/PullRequestNearbyObjectHeaderOffset.pdf differ
diff --git a/src/Smalot/PdfParser/RawData/RawDataParser.php b/src/Smalot/PdfParser/RawData/RawDataParser.php
index 6b1b7ea5a..7133b62ba 100644
--- a/src/Smalot/PdfParser/RawData/RawDataParser.php
+++ b/src/Smalot/PdfParser/RawData/RawDataParser.php
@@ -534,7 +534,7 @@ protected function decodeXrefStream(string $pdfData, int $startxref, array $xref
     protected function getObjectHeaderPattern(array $objRefs): string
     {
         // consider all whitespace character (PDF specifications)
-        return '/'.$objRefs[0].$this->config->getPdfWhitespacesRegex().$objRefs[1].$this->config->getPdfWhitespacesRegex().'obj/';
+        return '/'.$objRefs[0].$this->config->getPdfWhitespacesRegex().'+'.$objRefs[1].$this->config->getPdfWhitespacesRegex().'+obj/';
     }
 
     protected function getObjectHeaderLen(array $objRefs): int
@@ -567,6 +567,7 @@ protected function getIndirectObject(string $pdfData, array $xref, string $objRe
             throw new \Exception('Invalid object reference for $obj.');
         }
 
+        $objHeaderPattern = $this->getObjectHeaderPattern($objRefArr);
         $objHeaderLen = $this->getObjectHeaderLen($objRefArr);
 
         /*
@@ -576,9 +577,27 @@ protected function getIndirectObject(string $pdfData, array $xref, string $objRe
         $offset += strspn($pdfData, $this->config->getPdfWhitespaces(), $offset);
         // ignore leading zeros for object number
         $offset += strspn($pdfData, '0', $offset);
-        if (0 == preg_match($this->getObjectHeaderPattern($objRefArr), substr($pdfData, $offset, $objHeaderLen))) {
-            // an indirect reference to an undefined object shall be considered a reference to the null object
-            return ['null', 'null', $offset];
+        if (0 == preg_match($objHeaderPattern, substr($pdfData, $offset, 33), $headerMatches)) {
+            // Some malformed files have slightly inaccurate xref offsets.
+            // Try to recover by locating the expected object header nearby.
+            $searchStart = max(0, $offset - 64);
+            $searchLen = 192;
+            if (
+                preg_match(
+                    $objHeaderPattern,
+                    substr($pdfData, $searchStart, $searchLen),
+                    $headerMatches,
+                    \PREG_OFFSET_CAPTURE
+                ) > 0
+            ) {
+                $offset = $searchStart + $headerMatches[0][1];
+                $objHeaderLen = \strlen($headerMatches[0][0]);
+            } else {
+                // an indirect reference to an undefined object shall be considered a reference to the null object
+                return ['null', 'null', $offset];
+            }
+        } else {
+            $objHeaderLen = \strlen($headerMatches[0]);
         }
 
         /*
diff --git a/tests/PHPUnit/Integration/RawData/RawDataParserTest.php b/tests/PHPUnit/Integration/RawData/RawDataParserTest.php
index c13759770..ac3a52c75 100644
--- a/tests/PHPUnit/Integration/RawData/RawDataParserTest.php
+++ b/tests/PHPUnit/Integration/RawData/RawDataParserTest.php
@@ -334,6 +334,9 @@ public static function provideRawDataRegressionFixtures(): iterable
         yield 'pr799 xref subsection with multiple spaces' => [
             'rawdata/PullRequestXrefSubsectionMultipleSpaces.pdf',
         ];
+        yield 'pr800 object header with multiple spaces (nearby xref offset)' => [
+            'rawdata/PullRequestNearbyObjectHeaderOffset.pdf',
+        ];
     }
 
     /**