Malicious PDF — malware analysis report

Static analysis result for SHA-256 70bcbfa5b6ff33c6…

MALICIOUS

PDF

78.6 KB
MD5: b3894632c177908f65c4bbf03774e914 SHA-1: 5d8caa7dfc3a645d6c3e3238f48a1a623d3d5c77 SHA-256: 70bcbfa5b6ff33c60c33642d883abd32c2c0e5e4ec163ce126fefa2e1a1bf80a
116 Risk Score

Malware Insights

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

This PDF file exploits the CVE-2010-0188 vulnerability in Adobe Reader, specifically targeting XFA forms. The critical heuristic firing indicates the exploitation of this known vulnerability, likely leading to the execution of arbitrary code. The presence of an embedded file and script payload further supports the malicious intent of this document.

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
085f9ebcf6e3b02bec0dcec3d094ea0980fdabbdbd819b0b4cefa97ca85c1510		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 79746 bytes

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