Malicious PDF — malware analysis report

Static analysis result for SHA-256 7330188922c0cd7e…

MALICIOUS

PDF

35.2 KB Created: 2021-06-19 20:10:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 382992b579a508760e15bca9d2714b5d SHA-1: 3e209882c0aaef34b06816ca7dc346db843f3d81 SHA-256: 7330188922c0cd7e2486545ed1ec781bcb2c1edd824259a0143811e5f35278df
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. It uses a fake-CAPTCHA lure. 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 5

  • 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.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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/wizard-life-roblox-hack-game-hack PDF link annotation
    • https://library.itn.ac.id/perpusitn/repository/coin-master-20-free-spins-link-today_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/best-free-vpn-for-roblox_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/wahoo-gaming-co-free-robux_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-get-minecraft-for-free-2021_GM479516143.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/working-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/tiktok-free-package-dialog_GM835599320.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/1-000-subscriber-roblox-hack-tool_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/minecraft-free-download-mobile_GM479516143.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-daily-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/download-apps-for-robux_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-hack-apk-with-fb-login-2021_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-hack-someone-in-roblox-using-captra_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-coin-master-spins-blogger_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-free-spins-hack-link_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coinmaster-blogspot_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/ben-ten-roblox-cheats_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/howto-get-roblox-hacks-for-free_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/robux-free-c_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/get-me-free-robux_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-prison-life-hack_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_off000031a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31A3 22552 bytes
SHA-256: 3607fb911827aa656b1a9e98ef699c2ffbcf22b739242fef12c5a68fe66ca9cd
font_01_sfnt_off000063c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63C7 19232 bytes
SHA-256: 1f2fbbdcfedb411dd3cb64ace6dd8aa1fb8be59a8e210c92c460755b6d325a05

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