Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f9fb5556dee545b…

MALICIOUS

PDF

47.8 KB Created: 2021-05-11 23:01:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: d01d4c94c995a31c24509b190804af61 SHA-1: 1d48b937a2d79d709cd9730ed36e661e8a3350f0 SHA-256: 8f9fb5556dee545be247bb613d9db64585b2aa122ff9d970a887dea136635b21
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded URLs and a call-to-action lure, suggesting it is designed to trick users into downloading malicious content. The ML classifier also flagged this PDF as malicious. The presence of a password archive lure indicates an attempt to bypass security controls by encrypting the payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9013

Heuristics 4

  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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 https://netcdn.xyz/app/431946152/www-bandicam-com-free-robux-game-hack
    • http://bbalitvet.litbang.pertanian.go.id/library/repository/minecraft-free-download-linux_GM479516143.pdf
    • http://bbalitvet.litbang.pertanian.go.id/library/repository/roblox-catalog-free_GM431946152.pdf
    • http://bbalitvet.litbang.pertanian.go.id/library/repository/coin-master-free-spins-link_GM406889139.pdf
    • http://bbalitvet.litbang.pertanian.go.id/library/repository/how-to-hack-and-get-free-robux_GM431946152.pdf
    • http://bbalitvet.litbang.pertanian.go.id/library/repository/free-coin-master-coins-and-spins_GM406889139.pdf
    • http://bbalitvet.litbang.pertanian.go.id/library/repository/coinmaster-com_GM406889139.pdf
    • http://bbalitvet.litbang.pertanian.go.id/library/repository/how-to-hack-roblox-accounts-passwords_GM431946152.pdf
    • http://bbalitvet.litbang.pertanian.go.id/library/repository/regal-world-coin-master_GM406889139.pdf
    • http://bbalitvet.litbang.pertanian.go.id/library/repository/master-coin-hack-mod_GM406889139.pdf
    • http://bbalitvet.litbang.pertanian.go.id/library/repository/minecraft-tower-defense-2-hacked_GM479516143.pdf
    • http://bbalitvet.litbang.pertanian.go.id/library/repository/free-robux-codes-2021-real_GM431946152.pdf
    • http://bbalitvet.litbang.pertanian.go.id/library/repository/how-to-hack-someone-on-roblox_GM431946152.pdf
    • http://bbalitvet.litbang.pertanian.go.id/library/repository/minecraft-bedrock-free-download_GM479516143.pdf
    • http://bbalitvet.litbang.pertanian.go.id/library/repository/rbx-earn_GM431946152.pdf
    • http://bbalitvet.litbang.pertanian.go.id/library/repository/hackear-juego-coin-master-espaol_GM406889139.pdf
    • http://bbalitvet.litbang.pertanian.go.id/library/repository/hack-coin-master-app-ios_GM406889139.pdf
    • http://bbalitvet.litbang.pertanian.go.id/library/repository/minecraft-hack-download_GM479516143.pdf
    • http://bbalitvet.litbang.pertanian.go.id/library/repository/get-robux-today_GM431946152.pdf
    • http://bbalitvet.litbang.pertanian.go.id/library/repository/coin-master-hack-355_GM406889139.pdf
    • http://bbalitvet.litbang.pertanian.go.id/library/repository/cm-free-spins_GM406889139.pdf
    • https://discord
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004ce5.bin
4e939a053cb0867e679e5d9f06d1a5eb4762d194697241cb7f7e74bd8a086577		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4CE5 27108 bytes
font_01_sfnt_off00008c44.bin
3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C44 2840 bytes
font_02_sfnt_off000095f5.bin
046fece166e0c344053b4db6f28898a504184055d343b56560be82d41958fbf7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x95F5 19156 bytes

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