Malicious Office (OLE) / .XLS — malware analysis report

Static analysis result for SHA-256 927a405869e09366…

MALICIOUS

Office (OLE) / .XLS

181.5 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: 4c7f69abfc6c17ab9840d8a16d3072c5 SHA-1: 78b14c00f2544079567de0c022c1847c59bc8171 SHA-256: 927a405869e09366dfb053b2d80f3b7ddd97dee75bbe39fc1ed47edf93fbc243
110 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1059.005 Visual Basic

The critical heuristic firing indicates exploitation of CVE-2017-0199 via an OLE2Link object, which attempts to load a remote URL. This URL is embedded within the document's structure and points to a suspicious domain. The presence of an embedded PDF with suspicious static findings further suggests a multi-stage attack. The VBA macros, while not containing executable statements directly, are part of the overall malicious structure.

Heuristics 5

  • OLE2Link / URL Moniker → remote loader — CVE-2017-0199 critical CVE likely CVE_2017_0199
    Document 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.
  • Secondary embedded PDF body has suspicious static findings high POLYGLOT_CHILD_PDF_STATIC_TRIAGE
    A 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.
  • VBA project contains no executable statements low OLE_VBA_MACROS
    Document contains a VBA project, but extracted modules only contain attributes/options/comments and no executable statements.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The 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.
  • 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 https://instaba.se/dCuX06?&https://codecanyon.net/item/mitalk-p2p-webrtc-realedcloud-video-conference?9033320000����!���l���

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
7f506327609c082af1cd37dde23bc2c71a000f7d1ef530b6abb66775040a7673		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 1206 bytes
polyglot_child_pdf_off00000c00.pdf
1a6804746157a7df3b0ff00ef622ecd91361ee2bbedab8750cd1331975668d59		 polyglot-child-pdf Secondary PDF body inside ole container at offset 0xC00 182784 bytes

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