Malicious PDF — malware analysis report

Static analysis result for SHA-256 5dd2c308b47ac955…

MALICIOUS

PDF

50.6 KB
MD5: 32ab2a91525839e627ecacd6d9026753 SHA-1: 1291b90a28879d02a88c1b6f0176036ca3336e3b SHA-256: 5dd2c308b47ac955351f6c0efe71d608bd8abb69d65aa4737a72bb0c75669b2f
176 Risk Score

Malware Insights

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

The PDF file contains an exploit for CVE-2010-0188 targeting Adobe Reader's XFA forms. This exploit is designed to download and execute a secondary payload, as indicated by the 'Pdf.Exploit.Dropped-78' ClamAV detection and the ML classifier flagging the PDF as malicious. The embedded URLs, while benign, are part of the XFA structure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • Adobe Reader LibTIFF XFA image exploit — CVE-2010-0188 critical CVE likely CVE_2010_0188
    PDF contains the CVE-2010-0188 exploit template: XFA JavaScript heap-spray setup, a generated TIFF image payload, and assignment of that TIFF data to an XFA image field rawValue to trigger Adobe Reader's LibTIFF parser.
  • ClamAV: Pdf.Exploit.Dropped-78 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Dropped-78
  • 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 script payload in PDF stream low PDF_EMBEDDED_SCRIPT_PAYLOAD
    PDF stream bytes contain an HTML/XFA <script> tag without accompanying Windows shell-execution primitives — common in accessible XFA forms but worth surfacing for analyst review.
  • 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://ns.adobe.com/xdp/
    • http://www.xfa.org/schema/xfa-template/2.5/
    • http://www.xfa.org/schema/xfa-data/1.0/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0008.bin
fe9b2ab46dd8d315f6bda627e65e741c32bfe5927156e69451f9cce4f244befc		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 51078 bytes

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