Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 81476a0591455602…

MALICIOUS

RTF / .DOC

3.19 MB Created: 2019-09-17 13:59:00
MD5: 32dc61a7d76ad688864a3f873c454b2e SHA-1: d4d2892015db4b04389878029bb66afad3689943 SHA-256: 81476a0591455602ec96e76fd76d781dc2da872e3c1909b58bda58a1851f6099
80 Risk Score

Malware Insights

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

The RTF document contains embedded OLE objects, with a high-confidence heuristic indicating that \objupdate forces OLE activation. This suggests the document is designed to exploit vulnerabilities associated with OLE object handling, likely to download and execute a secondary payload. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of the specific intent.

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
  • 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://schemas.microsoft.com/office/word/2003/wordml

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off0031c59f.bin
a26e972fe2bab9e245fd4ab926de1cec748af1497e9631400e190f1868884bcd
rtf-objdata-decoded RTF \objdata at offset 0x31C59F 1442 bytes