Malicious PDF — malware analysis report

Static analysis result for SHA-256 1829892abbcd791a…

MALICIOUS

PDF

122.8 KB
MD5: 419d82c9707d8d19c9c47c445644e2f2 SHA-1: 09c8f697581214220f9f20dfca3f3df8408c3185 SHA-256: 1829892abbcd791a31e896e2c404867257b5322575da2be7abead552a56c3d70
176 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1059.007 JavaScript

The sample is a PDF file identified as malicious by multiple heuristics, including a critical detection for CVE-2010-0188, which is an Adobe Reader exploit targeting XFA forms. The exploit appears to be embedded within the XFA payload, suggesting it's designed to execute arbitrary code upon opening. While no specific malicious URLs or scripts were directly extracted, the exploit itself is the primary indicator of malicious intent, likely leading to the download of a further stage.

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
e557b05090258f7b97d1ff67524c0d33dc6341b6055c2b21d784536877b7228c		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 124958 bytes

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