Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f7eb13a1a03f49f…

MALICIOUS

PDF

34.9 KB Created: 2021-07-08 19:13:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 6dc748ea7a4881c212b5f013c5365f9d SHA-1: 12e01f7900aeb02c66634ff12cb04ef9b18ef20b SHA-256: 4f7eb13a1a03f49fe195f0d13f26f80f66aa155c42f56e433181bc927b3bcd39
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.tw/app/479516143/toolbox-premium-apk-game-hack PDF link annotation
    • http://akbidprimahusada.ac.id/elibrary/repository/how-to-hack-in-roblox-prison-life_GM431946152.pdfIn PDF document text
    • https://akbidprimahusada.ac.id/elibrary/repository/arsenal-hacks-roblox-2021_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/roblox-ninja-dojo-tycoon-cheats_GM431946152.pdfIn PDF document text
    • https://akbidprimahusada.ac.id/elibrary/repository/2021-hack-gui-roblox_GM431946152.pdfIn PDF document text
    • https://akbidprimahusada.ac.id/elibrary/repository/how-to-hack-gravity-on-roblox-with-nopde_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/coin-master-free-spins-without-verification_GM406889139.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/all-coin-master-spin-link-and-free-download_GM406889139.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/coin-master-claim-spins_GM406889139.pdfIn PDF document text
    • https://akbidprimahusada.ac.id/elibrary/repository/roblox-magitan-hack_GM431946152.pdfIn PDF document text
    • https://akbidprimahusada.ac.id/elibrary/repository/free-tiktok-comments_GM835599320.pdfIn PDF document text
    • https://akbidprimahusada.ac.id/elibrary/repository/roblox-cheat-robux-apk_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/coin-master-free-spins-for-today_GM406889139.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/free-custom-minecraft-skins_GM479516143.pdfIn PDF document text
    • https://akbidprimahusada.ac.id/elibrary/repository/free-roblox-admin-accounts_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/free-coin-master-hacks-no-verification-or-survey_GM406889139.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/free-roblox-clothes_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/roblox-body-free_GM431946152.pdfIn PDF document text
    • https://akbidprimahusada.ac.id/elibrary/repository/how-to-bypass-roblox-cheat-engine-without-download_GM431946152.pdfIn PDF document text
    • https://akbidprimahusada.ac.id/elibrary/repository/free-admin-codes-2021-roblox_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/bux-life-free-robux_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_off00003039.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3039 22928 bytes
SHA-256: f2b63b45b80771e87cedcea841b3c8eeeb1f495dc062a08398788b03efe64138
font_01_sfnt_off0000635f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x635F 19236 bytes
SHA-256: b707bf962d708226fa4f5ecddf1a4f1b310cb2283a92f7de3b794da3f37a443c

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