Malicious PDF — malware analysis report

Static analysis result for SHA-256 0be86de162fb48ed…

MALICIOUS

PDF

99.8 KB
MD5: aaa10dcea36f6e7d75fce6afe7351d0c SHA-1: a7346ebe2dbfb2ec9dc0aa3057d2281ba3f4f2c0 SHA-256: 0be86de162fb48ed19f2c02152c943c82eb3c7800e24239d025578c7af09056b
116 Risk Score

Malware Insights

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

The sample is a PDF file that exploits CVE-2010-0188, a known vulnerability in Adobe Reader related to XFA forms. This exploit is designed to achieve client-side code execution. The ML classifier strongly indicates maliciousness, and the presence of an embedded script payload further supports this. The benign URLs present are likely decoys or unrelated to the malicious functionality.

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
cc2948fc47548e973537fd118803564034ef69e811b7cf1b43b6fe1521258ae9		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101431 bytes

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