Malicious PDF — malware analysis report

Static analysis result for SHA-256 0db595c121899947…

MALICIOUS

PDF

8.0 KB Created: 2010-10-15 14:23:58 Authoring application: yen vaw
MD5: be9e475fd3e01e739eaf2362cb9539b1 SHA-1: c9954f5f3fbfb3b150abe208c763d942043bfc0f SHA-256: 0db595c121899947d9c14d1822ed95311fad0a46645d2e608cb0030ef246abd4
108 Risk Score

Malware Insights

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

The file is identified as a malicious PDF by ClamAV and an ML classifier, indicating it's designed to execute malicious code. The presence of embedded files and XFA forms suggests it may be used to exploit client-side vulnerabilities or act as a dropper for further malware. The benign URLs extracted do not provide further insight into the attack's nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Dropper.Agent-7228474-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7228474-0
  • Embedded file low PDF_EMBEDDED
    PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
  • XFA form low PDF_XFA
    PDF uses XML Forms Architecture — can contain script logic
  • 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.xfa.org/schema/xfa-template/2.5/
    • http://ns.adobe.com/xdp/
    • http://www.xfa.org/schema/xci/1.0/
    • http://ns.adobe.com/xtd/
    • http://www.xfa.org/schema/xfa-data/1.0/
    • http://ns.adobe.com/xfdf/
    • http://www.xfa.org/schema/xfa-form/2.8/

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0002.bin
d81baa73e490e4cb879e13927cacd1dd1be37524a37eac51603e15117c578777		 pdf-embedded-file PDF EmbeddedFile object 2 at offset 0xD91 84 bytes
embedded_file_obj0008.bin
24c130f03a4cf51d470b536e94c1e58af67665739e200e0ce198ad41086243c0		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xE42 228 bytes
embedded_file_obj0019.bin
c97e0522381d6196cc0695f35f4d065f15c9c86a9601a7f776c6afd3f4c6b460		 pdf-embedded-file PDF EmbeddedFile object 19 at offset 0xF33 199 bytes
embedded_file_obj0010.bin
31f5aedad71f58cdda2662f0e242f75cc76ccd54d8d2c6562dedfe420c434e1e		 pdf-embedded-file PDF EmbeddedFile object 10 at offset 0x1024 119 bytes
embedded_file_obj0018.bin
e6c26a3478346d27e841ad49868ebf68bf4c6863b6750e8d60bda3c4c6f79876		 pdf-embedded-file PDF EmbeddedFile object 18 at offset 0x10DB 77 bytes
embedded_file_obj0015.bin
92a3ce61d783e15932b5de127ce45a9b4c2f98f4da2453f65241573c1dda808a		 pdf-embedded-file PDF EmbeddedFile object 15 at offset 0x1182 56 bytes

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