Malicious PDF — malware analysis report

Static analysis result for SHA-256 af210b1f9d5e0f07…

MALICIOUS

PDF

34.8 KB Created: 2021-06-27 05:37:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-21
MD5: e1e8951f98368ebfd06ffd26bd6f1549 SHA-1: c3397a40157ab315018f9839a3554999f4b982fe SHA-256: af210b1f9d5e0f07ee09ce096fb389a2a1ade8d2f5615e83e0f0353431cb6487
180 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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/inject-hack-roblox-buides-club-game-hack In PDF document text
    • http://217.165.206.12/userfiles/files/roblox-mobile-hack_GM431946152.pdfPDF link annotation
    • http://217.165.206.12/userfiles/files/pastebin-robux-promocode-hack-2021_GM431946152.pdfIn PDF document text
    • http://217.165.206.12/userfiles/files/prison-life-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://217.165.206.12/userfiles/files/kuso-icu-roblox-hack_GM431946152.pdfIn PDF document text
    • http://217.165.206.12/userfiles/files/free-hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • http://217.165.206.12/userfiles/files/how-to-get-cheats-in-roblox-jailbreak-yt-2021_GM431946152.pdfIn PDF document text
    • http://217.165.206.12/userfiles/files/coin-master-free-spin-2912-2021_GM406889139.pdfIn PDF document text
    • http://217.165.206.12/userfiles/files/release-boku-no-roblox-remastered-free-lvl_GM431946152.pdfIn PDF document text
    • http://217.165.206.12/userfiles/files/coin-master-email-rewards-link_GM406889139.pdfIn PDF document text
    • http://217.165.206.12/userfiles/files/free-minecraft-games-for-kids_GM479516143.pdfIn PDF document text
    • http://217.165.206.12/userfiles/files/how-to-get-free-robux-fast-and-easy_GM431946152.pdfIn PDF document text
    • http://217.165.206.12/userfiles/files/legitimate-coin-master-free-spins-apk_GM406889139.pdfIn PDF document text
    • http://217.165.206.12/userfiles/files/hack-para-coin-master-sin-verification_GM406889139.pdfIn PDF document text
    • http://217.165.206.12/userfiles/files/robux-free-2021_GM431946152.pdfIn PDF document text
    • http://217.165.206.12/userfiles/files/free-roblox-accounts-with-robux-that-work-not-banned-2021_GM431946152.pdfIn PDF document text
    • http://217.165.206.12/userfiles/files/how-can-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://217.165.206.12/userfiles/files/free-pet-snacks-coin-master_GM406889139.pdfIn PDF document text
    • http://217.165.206.12/userfiles/files/clean-master-hack-coins_GM406889139.pdfIn PDF document text
    • http://217.165.206.12/userfiles/files/coin-master-hack-apk-2021-download_GM406889139.pdfIn PDF document text
    • http://217.165.206.12/userfiles/files/free-spins-coin-master-links_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_off00003138.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3138 22060 bytes
SHA-256: 1d95b04458054814bfd6e40d6e3e6bf598e3837d72f06888eb674c1585e0c98b
font_01_sfnt_off000061b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61B3 19380 bytes
SHA-256: bc87d4b7bb7cf7f2d60df051fa3ee27b1400946152cdd190658576b6e33af1dd

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