Malicious PDF — malware analysis report

Static analysis result for SHA-256 18656ecdff861b76…

MALICIOUS

PDF

50.8 KB
MD5: f440822dc262e369a2c92fc2e10159d5 SHA-1: 22865591615ac6a1d117e8b632c10b2271e71b67 SHA-256: 18656ecdff861b76dda9eb3a91a06e647a85f28dec4048e8fa16efedd05c3394
176 Risk Score

Malware Insights

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

This PDF file contains an embedded XFA form that exploits CVE-2010-0188 in Adobe Reader, a critical vulnerability allowing for client-side code execution. The embedded file and heuristic firings strongly indicate a malicious exploit. While the exact payload is not visible, the exploit's nature suggests it's designed to download and execute further malicious content.

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.Agent-6136306-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-6136306-0
  • 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 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
9488ebd30f5bbf000a01748fe5847b07313254b11837e0efef3c9c8f507223a7		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 51225 bytes

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