RTF malware analysis — malicious · 8cdbebdd4f053046

MALICIOUS

RTF

128.0 KB Created: 2018-07-13 12:57:00 First seen: 2021-02-23

MD5: b8a777f62dadfdd09b17016e270ec2b2 SHA-1: 93de70a28940d1bd4565ad2ff1432f20f84f8005 SHA-256: 8cdbebdd4f05304622623273903ebca5849515ba31a5be499f117eae08671200

242 Risk Score

Heuristics 6

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.
ClamAV: Xls.Malware.Sload-7135989-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Xls.Malware.Sload-7135989-0
\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
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 In RTF body

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`objdata_00_off00003c40.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x3C40	24635 bytes
SHA-256: `5f0081617ef39983bb3c91817f5428033921f9f54af26de9d53c89b2e68976ea`
Detection ClamAV: Xls.Malware.Sload-7135989-0 Obfuscation or payload: unlikely
`objdata_01_off00015486.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x15486	21774 bytes
SHA-256: `8a5a0369036ba2320d3114799f1976641d38a7620749498bfd50ef4ee925e476`
Detection ClamAV: Xls.Malware.Sload-7135989-0 Obfuscation or payload: unlikely

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