RTF malware analysis — malicious · c967e91c2a94b327

MALICIOUS

RTF

217.8 KB First seen: 2022-04-13

MD5: 68a904076c91c957299665a40b11f09e SHA-1: e5e55c4c893986a55896a3d01672f9be4b1d6ae6 SHA-256: c967e91c2a94b327bbbe6c0e6951e0ad8c447b3cf95409c101e55c43e85a00ca

160 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1566.001 Spearphishing Attachment T1059.005 Visual Basic

The RTF file contains multiple embedded OLE objects, with one specifically flagged for ".objdata" and another for ".objupdate" which forces OLE activation. The document body explicitly instructs the user to 'download the document and click Enable Editing', a common lure for macro-based malware. The presence of embedded artifacts suggests these are likely payloads or components of a dropper. No scripts were extracted, limiting direct analysis of payload execution.

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.
\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
Macro/content-enable lure medium SE_ENABLE_LURE

Document instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings
Suspicious extracted artifact medium 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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`objdata_00_off0000095d.bin` `6deb1acc5502a9952eff074fe1d4e70d7007a3d92c315b8855289ec590095bd0`	rtf-objdata-decoded	RTF \objdata at offset 0x95D	15635 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 shell/COM execution token(s).
`objdata_01_off00008903.bin` `64b1f15a0e9494bf93ea2a1e9ea1b7d807d3f377db217eed0f95ae662942e168`	rtf-objdata-decoded	RTF \objdata at offset 0x8903	2632 bytes
`objdata_02_off00009ea6.bin` `44deae4627fee3c44f54d5bd10477ec2e17f4c08135f08e2417832e36d10d037`	rtf-objdata-decoded	RTF \objdata at offset 0x9EA6	12297 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.