Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0e1b046d853a05b…

MALICIOUS

PDF

36.2 KB Created: 2021-07-01 04:13:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a8c8002c43674333a694ad01b16323f6 SHA-1: 2ba335bb1d460176f7e3755dce6b8a50b2967705 SHA-256: d0e1b046d853a05bf6c619fba70ebaee8218f82746d55069fe7467b2edaa0ddd
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, specifically promoting "free generator / game hack" lures for popular games like Roblox and Coin Master. The primary link, http://netcdn.co/app/431946152/how-to-get-free-2021-robux-on-roblox-game-hack, is identified as a malicious redirector. The document body and embedded URLs strongly suggest a social engineering tactic to drive traffic to potentially harmful websites, likely for further malware delivery or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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-2021-robux-on-roblox-game-hack In PDF document text
    • http://lib.vipklh.ru/repository/links-for-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/roblox-free-bag-goku_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/hack-para-trollear-roblox_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/coin-master-15-free-spin-link-of-last-5-days_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/roblox-hacked-client-comlu_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-roblox-obc-accounts-2021_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/how-to-ban-or-kick-in-servers-roblox-hack_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/roblox-how-to-hack-welcome-to-roblox-building_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/coin-master-hack-programers_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-minecraft-gift-card_GM479516143.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/coins-master-hack_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/how-to-get-minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/boost-vector-roblox-hack_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-version-of-roblox_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/play-full-version-of-minecraft-for-free-no-download_GM479516143.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/how-to-hack-roblox-passwords_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/hack-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-robux-microsoft_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/roblox-parkour-points-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_off0000338e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x338E 23056 bytes
SHA-256: a02cc391415945c011340f794557129eaa98acff16159f11631f81c333aae11a
font_01_sfnt_off00006714.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6714 19460 bytes
SHA-256: c2544bef67efe109feee347b9a63cae12c4d9e7fbf679c3eb20930f9dc62f62f

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