Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 af2cde536815965d…

MALICIOUS

RTF / .DOC

162.8 KB
MD5: 47d0bc8cdf4fbc618c133cfd50afc58e SHA-1: e9c764d77221dd630c74637742f86b1e7ceb313a SHA-256: af2cde536815965d5d555653503083532debcba5daa87f3ce974a497a96c51ff
141 Risk Score

Malware Insights

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

The RTF document contains OLE object data, which is a common technique for embedding malicious content. The heuristics indicate that the OLE object is likely activated via \objupdate, suggesting an attempt to execute embedded code or trigger a download. Without further script analysis or network indicators, the exact payload and delivery mechanism remain unclear, leading to an 'unknown family' classification.

Heuristics 4

  • \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
  • Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off000018e1.bin
8e29b7d7db8c33e3031e157a948fbf55dd63623bee3343ff27b045880bc8b0fb
rtf-objdata-decoded RTF \objdata at offset 0x18E1 64057 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 7.93, consistent with packed or encrypted content.