PDF static analysis report

Static analysis result for SHA-256 16e3951fdd937ffd…

SUSPICIOUS

PDF

85.9 KB Created: 2017-11-22 10:17:49 +09:00 First seen: 2026-05-04
MD5: 737b93df5fbfbd2ae767fe2c73b154ff SHA-1: ac1386d9df24e3a08eac13823f5e60cb69081978 SHA-256: 16e3951fdd937ffdba60fc47dfbfd250f44e70f36602f78d893de939e752ae8e
58 Risk Score

Malware Insights

MITRE ATT&CK
T1059.007 JavaScript T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and an embedded HWP file, indicating an attempt to exploit vulnerabilities and execute malicious code. The JavaScript specifically checks for older Adobe Reader versions and attempts to interact with embedded files, suggesting a multi-stage attack. The ML classifier strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

Heuristics 5

  • JavaScript action low 1 related finding PDF_JAVASCRIPT
    PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • Embedded file low PDF_EMBEDDED
    PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
  • Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://www.w3.org/1999/02/22-rdf-syntax-ns# In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text

Related samples 4

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
1117_output_Q_x_Tripping_point.hwp pdf-embedded-file PDF EmbeddedFile object 37 at offset 0x30D9 81920 bytes
SHA-256: d0361adb36e81b038c752ea1a7bdc5517b1e44f82909bc2bd27b77b2652667ee
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 7.73, consistent with packed or encrypted content.
javascript_obj0035_000.js pdf-javascript-stream PDF /JS object 35 at offset 0x2614 2224 bytes
SHA-256: 3ab7eceb12342320fbc370e16c5f328ea0c7ea01f1091355e67f1644cbce3583
Preview script
First 1,000 lines of the extracted script
�� v a r   v   =   a p p . v i e w e r V e r s i o n ; 
 i f   ( v   <   7 ) 
 { 
 	 v a r   n   =   0 ; 
 	 i f   ( t h i s . d a t a O b j e c t s   ! =   n u l l ) 
 	 	 n   =   t h i s . d a t a O b j e c t s . l e n g t h ; 
 	 i f   ( v   > =   5   & &   v   <   6   & &   n   >   0   & &   ( a p p . v i e w e r V a r i a t i o n   = =   " F u l l "   | |   a p p . v i e w e r V a r i a t i o n   = =   " F i l l - I n " ) ) 
 	 { 
 	 	 i f   ( t h i s . e x t e r n a l ) 
 	 	 	 a p p . a l e r t ( "�t  �8� �в�  ̨��  � �|�t  Ljµ�Ȳ� .  ̨��  � �|�D  ���$�t   [� ǥ ]  ��͔�|  �t���X��  �8� �X  �����D  � ǥ�\  ���L   A d o b e   A c r o b a t���   �����D  ����   [� �| ]   >   [�8�   ���1 ]   >   [���h�   �p�t�0  � ̴ ]  �T�t�|  ��Ʃ�X�����$ . " ,   3 ,   0 ) ; 
 	 	 e l s e 
 	 	 	 a p p . a l e r t ( "�t  �8� �в�  ̨��  � �|�t  Ljµ�Ȳ� .  ̨��  � �|�D  ���$�t   [� �| ]   >   [�8�   ���1 ]   >   [���h�   �p�t�0  � ̴ ]  �T�t�|  ��Ʃ�X�����$ . " ,   3 ,   0 ) ; 
 	 } 
 	 e l s e   i f   ( v   > =   6   & &   v   <   7 ) 
 	 { 
 	 	 i f   ( n   = =   0 ) 
 	 	 { 
 	 	 	 v a r   n p   =   t h i s . n u m P a g e s ; 
 	 	 	 s y n c A n n o t S c a n ( ) ; 
 	 	 	 f o r   ( v a r   p   =   0 ;   p   <   n p   & &   n   = =   0 ;   + + p ) 
 	 	 	 { 
 	 	 	 	 v a r   a n n o t s   =   t h i s . g e t A n n o t s ( p ) ; 
 	 	 	 	 i f   ( a n n o t s   ! =   n u l l ) 
 	 	 	 	 { 
 	 	 	 	 	 f o r   ( v a r   i   =   0 ;   i   <   a n n o t s . l e n g t h ;   + + i ) 
 	 	 	 	 	 { 
 	 	 	 	 	 	 i f   ( a n n o t s [ i ] . t y p e   = =   " F i l e A t t a c h m e n t " ) 
 	 	 	 	 	 	 { 
 	 	 	 	 	 	 	 n   =   1 ; 
 	 	 	 	 	 	 	 b r e a k ; 
 	 	 	 	 	 	 } 
 	 	 	 	 	 } 
 	 	 	 	 } 
 	 	 	 } 
 	 	 } 
 	 	 i f   ( n   >   0 ) 
 	 	 { 
 	 	 	 i f   ( t h i s . e x t e r n a l ) 
 	 	 	 	 a p p . a l e r t ( "�t  �8� �в�  ̨��  � �|�t  Ljµ�Ȳ� .  ̨��  � �|�D  ���$�t  �8�   �=�X  � ��  ¤�l�d  �ɳ   � ��  Lj��  ���   ��� � �D  �t���X��   [̨��  � �| ]�D  � ���X�����$ . " ,   3 ,   0 ) ; 
 	 	 	 e l s e 
 	 	 	 	 a p p . a l e r t ( "�t  �8� �в�  ̨��  � �|�t  Ljµ�Ȳ� .  ̨��  � �|�D  ���$�t   [�8�  ]   >   [̨��  � �| ]  �T�t�|  ��Ʃ�X�����$ . " ,   3 ,   0 ) ; 
 	 	 } 
 	 } 
 }
stream_011_off00002614.js decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2614 1535 bytes
SHA-256: dc408803d603e6c1e1396a88cedf8380e9f84b87ce57e9209322e2c4ae99082a

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