Malicious PDF — malware analysis report

Static analysis result for SHA-256 c70f2dd8bd1478dd…

MALICIOUS

PDF

35.8 KB Created: 2021-06-18 02:23:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 97b54b24b519582077ce05bec25b432c SHA-1: 21204f32aee7b32c931b7b943b374d531508a18a SHA-256: c70f2dd8bd1478dd93c2955b670388d285b8d1aa7caa532229e8c4dc2ec1af32
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • 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/how-to-get-free-robux-easy-2021-december-game-hack PDF link annotation
    • http://opac.disarpus.surakarta.go.id/repository/hack-version-of-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/free-robux-no-apps_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/give-me-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/free-coins-2021-coin-master-link_GM406889139.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/mcpe-master-hack-coin-apk_GM406889139.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/free-vip-server-roblox_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/free-items-with-inspect-roblox_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/roblox-server-shutdown-hack_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/coin-master-get-free-cards_GM406889139.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/coin-master-daily-free-spin-and-coin-link-haktuts_GM406889139.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/minecraft-launcher-free_GM479516143.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/coin-master-free-spins-no-generator_GM406889139.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/coin-master-hack-without-verification-code_GM406889139.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/coin-master-spin-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/money-cheats-in-roblox-bloxburb-beta_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/how-to-hack-someone-on-roblox_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/free-appsfor-coin-master-daily-rewards_GM406889139.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/coin-master-free-spins-youthnow_GM406889139.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/free-robux-no-human-verification-easy_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/master-hack-coin_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003224.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3224 22420 bytes
SHA-256: 36e7f700e536f8913a1e8f8be9221b71df294b83d9519351dcbb9a383ec7919c
font_01_sfnt_off0000641a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x641A 19996 bytes
SHA-256: 3e97a798a0b9b77d1712c06d10ffe40afd9d4532afff0477b16ebd64c0907ea9

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