MALICIOUS
134
Risk Score
Malware Insights
MITRE ATT&CK
T1204.002 Malicious File
T1059.005 Visual Basic
The sample is an Excel file that exploits CVE-2017-0199 via an OLE2Link object to download a secondary payload from the URL http://192.210.175.4/FBV/2/000000o0o0o0o0o0o0o0o0o00%23%23%23%23%23%23%23%23%23%23%23%23%23%23000000000000000000%23%23%23%23%23%23%23%23%23%23%23%23%23%2300000000000.DOC. The embedded VBA macros are present but contain no executable statements, suggesting the exploit is delivered through the OLE object itself. The secondary payload is likely a PDF document, as indicated by the polyglot child PDF findings.
Heuristics 6
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OLE2Link / URL Moniker → remote loader — CVE-2017-0199 critical CVE likely CVE_2017_0199Document contains an embedded OLE link object whose URL Moniker points to a remote URL. When the host file is opened, Office follows the link, downloads the URL, and processes the response based on its Content-Type (HTA -> mshta.exe, RTF → Word, etc.) — the documented CVE-2017-0199 primitive. The URL extension is not a reliable filter; servers can return different payloads to Office's user agent.
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Secondary embedded PDF body has suspicious static findings critical POLYGLOT_CHILD_PDF_STATIC_TRIAGEA valid PDF body was found at a nonzero offset inside another container and its carved contents matched PDF exploit or lure heuristics. This catches polyglots where the top-level magic routes to ZIP/OLE while a PDF reader or downstream parser opens the hidden PDF payload.
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VBA project contains no executable statements low OLE_VBA_MACROSDocument contains a VBA project, but extracted modules only contain attributes/options/comments and no executable statements.
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PDF paints image(s) but contains no text operators info PDF_IMAGE_ONLY_LUREPDF has 2 image XObject(s) and the content stream contains no text-emitting operators (BT/ET, Tj, TJ, ', ") in either raw bytes or decompressed streams — this is the screenshot-as-PDF pattern used to bypass text-based scanners and to deliver instructions purely through rendered pixels. It is informational unless paired with invisible links or risky URI context.
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Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTALThe same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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Embedded URL info EMBEDDED_URLOne 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://192.210.175.4/FBV/2/000000o0o0o0o0o0o0o0o0o00%23%23%23%23%23%23%23%23%23%23%23%23%23%23000000000000000000%23%23%23%23%23%23%23%23%23%23%23%23%23%2300000000000.DOC
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/pdf/1.3/
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/xap/1.0/mm/
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
macros.bas7f506327609c082af1cd37dde23bc2c71a000f7d1ef530b6abb66775040a7673 |
vba-macro | oletools.olevba.extract_macros (decoded VBA source) | 1206 bytes |
polyglot_child_pdf_off0005b800.pdfe21a877e4c448f22ffe28a837ed8f3f900936925379bd6f8a93145fd2f9727dd |
polyglot-child-pdf | Secondary PDF body inside ole container at offset 0x5B800 | 751616 bytes |
polyglot_child_pdf_off00071000.pdf1684bd2a0b7a56341d734ee6687a885ff4dfd8719c06bee0f7a361e30dbca8ee |
polyglot-child-pdf | Secondary PDF body inside ole container at offset 0x71000 | 663552 bytes |
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