Malicious PDF — malware analysis report

Static analysis result for SHA-256 09feb0ed5e94f06e…

MALICIOUS

PDF

99.8 KB
MD5: 5d4ba266ffdf84e05c37b354436ab099 SHA-1: 76ed58978092fca9e4f216d14cb6c0bcaae68e47 SHA-256: 09feb0ed5e94f06e5aac816554f9e160e266d00c7add2fffc8af7120708b5f6b
116 Risk Score

Malware Insights

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

The PDF file contains an embedded XFA form that exploits CVE-2010-0188, a known vulnerability in Adobe Reader's LibTIFF component. This exploit is designed to achieve arbitrary code execution, typically used to download and run a second-stage malicious payload. The ML classifier strongly indicates malicious intent, and the embedded file further supports this.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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
a7fb57f0015162f94972f382503ed82ef170dcc88429030c3dfdf70b5ae63df8		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101465 bytes

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