Malicious PDF — malware analysis report

Static analysis result for SHA-256 64f1d1e2835b9201…

MALICIOUS

PDF

99.8 KB
MD5: d595ac3bf5b5a94447ec9efad7677d4e SHA-1: c814214359ef415b67a11fd155bd1978cc34ed53 SHA-256: 64f1d1e2835b92014f8b58db1c7d614ba74e7614d1601938fc53001fd88a4470
116 Risk Score

Malware Insights

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

The PDF sample contains an embedded XFA form that triggers the CVE-2010-0188 exploit. This exploit is known to facilitate arbitrary code execution, which is typically used to download and run a secondary malicious payload. The ML classifier strongly indicates maliciousness, and the presence of an embedded exploit points to a client-side execution attack.

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
bd7c9f780386e18e9f6a55a382b3e2b39fbe0cf9caa7a23e0c5637eaf768b68d		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101479 bytes

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