Malicious RTF — malware analysis report

Static analysis result for SHA-256 80de1a4604f3f02b…

MALICIOUS

RTF

3.65 MB First seen: 2026-06-11
MD5: af7a99c698b4977a0c8ef0f3a9a6c738 SHA-1: 8241dc360a69264a4fd8115933618fc807484b72 SHA-256: 80de1a4604f3f02b4c3d0958177d5fb4f9ccf6c7d2c719c07f19b5f4918302de
180 Risk Score

Heuristics 5

  • Split hex Equation Editor ProgID + OLE object critical CVE likely RTF_EQUATION_EDITOR
    RTF embeds the Equation.3 ProgID as hex bytes near OLE object activation and splits the byte stream with whitespace or an ignorable RTF group. This is an Equation Editor OLE activation surface commonly used by CVE-2017-11882 / CVE-2018-0802 exploit documents.
  • Equation Editor activation — CVE-2017-11882 related high CVE related CVE_2017_11882_ACTIVATION_RELATED
    RTF decodes to an Equation.3 ProgID and requests OLE activation with \objemb plus \objupdate. This reaches the legacy Equation Editor attack surface used by CVE-2017-11882/CVE-2018-0802 documents, but the malformed MTEF/native payload needed for stronger attribution was not recovered.
  • \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

Extracted artifacts 10

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off000a967c.bin rtf-objdata-decoded RTF \objdata at offset 0xA967C 194747 bytes
SHA-256: e0bc556a17fb5361f132063a8b4ae94aa98150d46d64929e43b4c0efcaaee2b3
objdata_01_off0011376f.bin rtf-objdata-decoded RTF \objdata at offset 0x11376F 693522 bytes
SHA-256: 06ba8aac9432811d7d531a9f7ee8f6d09ec58df6efe1a803c96f1bd3be7c7ac4
rtf_svb_0038c721.zip rtf-svb-package RTF \svb hex-decoded ZIP at offset 0x38C721 967 bytes
SHA-256: b461da4154fae7bb965448788af03a71a043eb99efb0e1486728dba51d84fefb
rtf_svb_0038d6c5.zip rtf-svb-package RTF \svb hex-decoded ZIP at offset 0x38D6C5 964 bytes
SHA-256: fd1e102bcb6b99544d5f496230f01cdc210d50001dfd8788c72c164a41bbc17a
rtf_svb_0038e7a8.zip rtf-svb-package RTF \svb hex-decoded ZIP at offset 0x38E7A8 962 bytes
SHA-256: dccebec6ff30f32dea492b008c7a93c18ee44b84efc33f5170556a0e447c561b
rtf_svb_0038f9ed.zip rtf-svb-package RTF \svb hex-decoded ZIP at offset 0x38F9ED 964 bytes
SHA-256: 65de83f9da1995ceca4030d239f160f1147ba8bc65cff69e56d96e1036f8a1f4
rtf_svb_00390a5a.zip rtf-svb-package RTF \svb hex-decoded ZIP at offset 0x390A5A 964 bytes
SHA-256: 39f288b305c47c2fd0fd8bd70152a78751d03b94e58ef4697d97c379caca4dee
rtf_svb_00391510.zip rtf-svb-package RTF \svb hex-decoded ZIP at offset 0x391510 962 bytes
SHA-256: 23b49ebcf55d2f54277e67ed137a0426cb9515e6c8114b1839bfd2e0b780ce39
rtf_svb_00392f48.zip rtf-svb-package RTF \svb hex-decoded ZIP at offset 0x392F48 966 bytes
SHA-256: c9a120b53568a6dad7025751988d0b74512060f8a13d1eb00a0bd65499d61adf
rtf_svb_003949e7.zip rtf-svb-package RTF \svb hex-decoded ZIP at offset 0x3949E7 965 bytes
SHA-256: 82c8d8674a89c4d2c1e4fd0de8103680307b4b4228464f322ce03570939e979c

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