Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a3f3b797b15dfe3…

MALICIOUS

PDF

99.5 KB
MD5: 9434f1bdd56d809a2584cda0d70b2968 SHA-1: 57ac9a8bd1bc372bdf238cde79ad7c48a99a3782 SHA-256: 0a3f3b797b15dfe3f479324f645226ee6c790d1d3ee031f2425e5b519a286ab0
116 Risk Score

Malware Insights

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

The PDF file exploits CVE-2010-0188, a known vulnerability in Adobe Reader's LibTIFF component, to achieve code execution. The presence of an embedded script payload and the ML classifier's high confidence further indicate malicious intent. The exploit likely serves as a dropper for a secondary payload, though the specific nature of that payload could not be determined from the available evidence.

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
2dab5d409d848593e73a39500f9dafcb4c2cbd94067bedeaa2aee5c18547efb6		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101147 bytes

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