Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee89cce99d2a774a…

MALICIOUS

PDF

38.9 KB Created: 2021-06-29 21:37:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: cc0a62f8ccf0fab774595932297079ce SHA-1: 6adde56892b3e930a5b0fbd64dee3a727ab5bb38 SHA-256: ee89cce99d2a774a82076d265afe50c67def96c932547413b4e75e60df74d209
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs and a document body that promotes free in-game currency for popular games, acting as a lure. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting a link farm designed to attract users searching for cheats or hacks. The ML classifier also flagged this PDF as malicious with high confidence. The primary attack pattern involves luring users to external sites that likely host malware or phishing content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://netcdn.co/app/431946152/como-conseguir-robux-gratis-sin-hacks-android-y-pc-game-hack
    • http://smpn1sda.sch.id/slims/repository/free-spins-coin-master-october-17-2021_GM406889139.pdf
    • http://smpn1sda.sch.id/slims/repository/free-robux-websites-that-actually-work_GM431946152.pdf
    • http://smpn1sda.sch.id/slims/repository/20-free-spins-coin-master_GM406889139.pdf
    • http://smpn1sda.sch.id/slims/repository/free-robux-only-username-and-password_GM431946152.pdf
    • http://smpn1sda.sch.id/slims/repository/free-robux-2021_GM431946152.pdf
    • http://smpn1sda.sch.id/slims/repository/how-to-get-hacked-accounts-back-on-roblox_GM431946152.pdf
    • http://smpn1sda.sch.id/slims/repository/free-coin-master-coins-and-spins_GM406889139.pdf
    • http://smpn1sda.sch.id/slims/repository/hack-robux-2021-engine_GM431946152.pdf
    • http://smpn1sda.sch.id/slims/repository/how-to-get-free-cards-for-coin-master_GM406889139.pdf
    • http://smpn1sda.sch.id/slims/repository/coin-master-hack-spins_GM406889139.pdf
    • http://smpn1sda.sch.id/slims/repository/coins-master_GM406889139.pdf
    • http://smpn1sda.sch.id/slims/repository/get-minecraft-windows-10-free_GM479516143.pdf
    • http://smpn1sda.sch.id/slims/repository/how-to-hack-peoples-from-roblox_GM431946152.pdf
    • http://smpn1sda.sch.id/slims/repository/master-coin-master-free-spin_GM406889139.pdf
    • http://smpn1sda.sch.id/slims/repository/coin-master-free-coins-link_GM406889139.pdf
    • http://smpn1sda.sch.id/slims/repository/how-to-get-free-robux-easy-hack_GM431946152.pdf
    • http://smpn1sda.sch.id/slims/repository/free-roblox-printables_GM431946152.pdf
    • http://smpn1sda.sch.id/slims/repository/free-robux-no-human-verification-2021-ios_GM431946152.pdf
    • http://smpn1sda.sch.id/slims/repository/can-you-hack-your-own-roblox_GM431946152.pdf
    • http://smpn1sda.sch.id/slims/repository/how-to-hack-in-roblox-prison-life_GM431946152.pdf
    • https://www.roblox.com/.I
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003e20.bin
38534a632c09a3ae9be4124bf5dac236d87729af0aaeafd64a5fdaeaa32bd030
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3E20 22996 bytes
font_01_sfnt_off0000715b.bin
89b64e51ff274164564ffbf96278fe04437503352cc8ca2181905008ed538de3
pdf-font-stream PDF embedded font (sfnt) at offset 0x715B 19696 bytes