Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 f44648e4cde4b6d0…

MALICIOUS

RTF / .DOC

72.3 KB
MD5: 100534a4b6c493cec8c0b268891a59a6 SHA-1: 6ef1eb5ddd8a2010e0a0f1276a7c5f9f28c26b3c SHA-256: f44648e4cde4b6d03d1d553b83ab9d700b584749ab1c90edfd70244f6e37c469
80 Risk Score

Malware Insights

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

The RTF document contains embedded OLE objects, and a ".objupdate" directive is present, indicating an attempt to automatically activate these objects. This is a common technique for delivering malicious content. While no specific payload or URL was extracted, the heuristics strongly suggest an exploit or downloader is embedded within the OLE object data. The document body contains only garbled text, providing no contextual clues.

Heuristics 3

  • \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 1 \objdata section(s) — embedded OLE objects
  • Embedded OLE object medium RTF_OBJEMB
    RTF contains \objemb — embedded OLE object

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off00000613.bin
e056478f952b7aebf5bd1e0857e145d03ca8ab7d17b66bce55d830e08134e9c7
rtf-objdata-decoded RTF \objdata at offset 0x613 4163 bytes