Malicious RTF — malware analysis report

Static analysis result for SHA-256 a316fa44627f1b7f…

MALICIOUS

RTF

689.3 KB Created: 2013-08-07 02:25:00 First seen: 2019-01-25
MD5: 2ffc95e1788e39052358a5a805380a12 SHA-1: dc8f2da65e60dab1822bab85014ab861e5d866dc SHA-256: a316fa44627f1b7fb13144cb7328bce79227ca1835a4481a3cac7da3c3953435
302 Risk Score

Malware Insights

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

The RTF file contains OLE objects and exploits CVE-2017-0199, which is known to download and execute remote content. The embedded URL points to a suspicious XLS file, likely a second-stage payload. The document body appears to be a financial report, potentially used as a lure.

Heuristics 8

  • Composite Moniker — CVE-2017-8570 (drops SCT script) critical CVE related CVE_2017_8570
    RTF \objdata decodes to OLE data containing the Composite Moniker — CVE-2017-8570 (drops SCT script) CLSID — the vulnerable control/moniker is embedded directly in the document's object stream, the delivery shape of this exploit. RTF objects auto-render when Word opens the file.
  • CVE-2017-0199 (OLE2Link / remote URL Moniker) critical CVE likely CVE_2017_0199
    RTF contains a URL Moniker OLE link whose decoded target is remote. Office can fetch and process the response through the CVE-2017-0199 OLE2Link attack path, but the server-side content type is not proven statically.
  • Composite Moniker in RTF OLE object high CVE related RTF_COMPOSITE_MONIKER_RELATED
    RTF contains Composite Moniker CLSID in OLE object context, but no nearby scriptlet/SCT payload was confirmed. Treat as related moniker attack-surface evidence rather than proof of CVE-2017-8570 exploitation.
  • ClamAV: Rtf.Exploit.CVE_2017_0199-6335035-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Rtf.Exploit.CVE_2017_0199-6335035-0
  • Automatically linked OLE object high RTF_OBJAUTLINK
    RTF contains \objautlink — an automatically linked OLE object surface that can be updated or activated when Word opens the document.
  • OLE object data medium RTF_OBJDATA
    RTF contains 1 \objdata section(s) — embedded OLE objects
  • OlePres presentation stream in RTF OLE object medium RTF_OLEPRES_STREAM
    RTF contains an embedded OLE object with an OlePres presentation stream. OlePres is an OLE presentation marker and is not enough on its own to identify CVE-2025-21298.
  • 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://www.pobedsp.volgodonskoiraion.ru/images/stories/01.10.2012.xls In RTF body
    • http://www.pobedsp.volgodonskoiraion.ru/images/stories/01.10.2012.xls+In RTF body
    • http://schemas.microsoft.com/office/word/2003/wordmlIn RTF body

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off000a0b0a.bin rtf-objdata-decoded RTF \objdata at offset 0xA0B0A 4137 bytes
SHA-256: 49fad2f111d50a2d3bb9f471d2bd93f3bbe1e4cf7e3863a41b81b87283e368cc

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