RTF / .DOC malware analysis — malicious · ff0de96ce6d1caa0

MALICIOUS

RTF / .DOC

421.9 KB

MD5: 5949085c9f589beb144d3754ac2e31a0 SHA-1: abd9878e3a98a33633329845cb83a15401b39304 SHA-256: ff0de96ce6d1caa0b3b22ae460548ba6f9e2bb6a14f5adef42649eda1b204b89

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious File

The RTF file contains multiple OLE objects, with high-confidence heuristics indicating automatic linking and update mechanisms. These features are commonly abused to embed and execute malicious code when the document is opened. The presence of ".objdata" sections and composite monikers further supports the exploitation of OLE object vulnerabilities. No specific malware family is identifiable from the provided evidence.

Heuristics 5

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.
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 3 \objdata section(s) — embedded OLE objects
Embedded OLE object medium RTF_OBJEMB

RTF contains \objemb — embedded OLE object

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`objdata_00_off000007de.bin` `4ab745b5c41668dc35e02c9576853b17b1e11eb840af38a3ba82e300ff64db66`	rtf-objdata-decoded	RTF \objdata at offset 0x7DE	116305 bytes
`objdata_01_off0003b979.bin` `76d4b8abb802bd06807a33ff09524d55e3d2a62fcd03f4b22006247f71e3f743`	rtf-objdata-decoded	RTF \objdata at offset 0x3B979	2632 bytes
`objdata_02_off0003cf1c.bin` `44deae4627fee3c44f54d5bd10477ec2e17f4c08135f08e2417832e36d10d037`	rtf-objdata-decoded	RTF \objdata at offset 0x3CF1C	12297 bytes

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