Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 f91e8419595b8bbd…

MALICIOUS

RTF / .DOC

9.4 KB
MD5: 6a75a380aff15c73ae8d5ad1b812d319 SHA-1: 69b4987d4118ed93b93e966cbeb9ca13665f203f SHA-256: f91e8419595b8bbdb66a9887e6b42ce72c69f2e7189f9d7015f3931dbea368c1
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious File T1059.001 PowerShell

The RTF document contains OLE object data and is configured to automatically update and activate these objects. This indicates an attempt to exploit OLE vulnerabilities to execute embedded code. While no specific script was extracted, the heuristics strongly suggest a malicious OLE object is present, likely designed to download and execute a second-stage payload. The confidence is slightly reduced due to the lack of explicit script content.

Heuristics 3

  • 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.
  • \objupdate forces OLE activation high RTF_OBJUPDATE
    RTF contains \objupdate — forces automatic OLE object instantiation when the document is opened, bypassing user interaction. Almost exclusively seen in Equation Editor exploit documents.
  • OLE object data medium RTF_OBJDATA
    RTF contains 2 \objdata section(s) — embedded OLE objects

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off0000124c.bin
86ce3e9c65c595b2d8201bebc6cb1dd07b051fbe847a23883f97b0b44c7058e4
rtf-objdata-decoded RTF \objdata at offset 0x124C 1551 bytes