Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c4833f49bcd0e6c…

MALICIOUS

PDF

34.8 KB Created: 2021-06-26 14:48:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: a4032ce7b5c02fc3fb82e698d2819b49 SHA-1: c99bd070fe36936731834b595de644f08f05ce0a SHA-256: 2c4833f49bcd0e6c44b28e914d2f8f916499d6b0f8cb4f367af18bb251dfdddc
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document contains multiple embedded URLs, with a primary focus on 'game hack' lures. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' indicates that the document links to a redirector for free generators or game hacks. The ML classifier also flagged this PDF as malicious with high confidence. The primary IOC is the initial redirect URL, which likely leads to a malicious download or phishing page.

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-find-a-roblox-code-for-free-robux-game-hack PDF link annotation
    • http://perpustakaan.pa-dompu.go.id/repository/how-to-change-your-name-on-roblox-for-free-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id//repository/minecraft-mac-free_GM479516143.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/roblox-the-island-2-cheats_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/how-to-hack-on-vehile-simualotor-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/survivor-minigame-hack-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/speed-hack-roblox-2021-in-any-game_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/flee-the-facility-roblox-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/free-robux-no-verification-no-download-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/instagram-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/roblox-free-clothes-website_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/coin-master-hack-tool-access-online-generator_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id//repository/coin-master-free-spins-link-blogspot-today_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id//repository/change-roblox-username-free_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/roblox-hack-script-list_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id//repository/coin-master-game-free_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/mocap-dancing-hack-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/coin-master-free-coins-and-spins-app_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/how-to-get-free-roebucks-without-verification_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/www-rbxhut-com_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/roblox-full-free-download_GM431946152.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_off00003049.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3049 22544 bytes
SHA-256: fc41f8df8d292545c56076187eec01aedaef7e5c3f6c5fb4e8801f9929a84c57
font_01_sfnt_off0000629d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x629D 19248 bytes
SHA-256: 363b6ae0a2fb4489e68e6d942a66c5b0494092d34b93e3dc19bef7358d6f8755

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