Malicious PDF — malware analysis report

Static analysis result for SHA-256 041d36045b4f055a…

MALICIOUS

PDF

43.0 KB Created: 2021-05-10 15:02:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: e6bad1e3b44d10d934475ea8dbe11d63 SHA-1: 023ef239675fffe3ad61d109d5f435230f57ff86 SHA-256: 041d36045b4f055adb0a3031cbb051f963c06784f5992106bc4451bc2f2409fb
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of "free Robux" and game hacks to entice users to click on embedded links. The primary link, https://netcdn.xyz/app/431946152/free-robux-2021-no-human-verification-game-hack, is flagged as a redirector, suggesting it leads to malicious content. The document's structure and numerous embedded URLs indicate a high likelihood of leading users to phishing or malware download sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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 https://netcdn.xyz/app/431946152/free-robux-2021-no-human-verification-game-hack PDF link annotation
    • http://lib.vipklh.ru/repository/how-to-get-minecraft-for-free-on-xbox_GM479516143.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/blox-land-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/how-to-hack-robux_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/hack-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/coin-master-35-16-hack-apk_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/minecraft-noob-vs-pro-vs-hacker-vs-god_GM479516143.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/blox-world-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-2021-robux_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/code-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-robux-discord_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/hack-game-plus-com-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-robux-no-apps_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-roblox-accounts-with-robux-that-work-not-banned_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-minecraft-skin-packs_GM479516143.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/coin-master-free-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/rbx-land-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/coin-master-free-spins-hack-2021_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-daily-spins-coin-master-2021_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_off000046f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x46F9 25860 bytes
SHA-256: 84c14b3ad749cbc109110c1e6e194e7aa2283e89de0e21f2b89d72c6c70311c7
font_01_sfnt_off000082ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82CA 19260 bytes
SHA-256: a5b009a33d06eb91b5687aca452054299973906144ac3f9b2fc2dd0e2fef1dac

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