Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2fdf421f524c10a…

MALICIOUS

PDF

43.3 KB Created: 2021-05-18 01:04:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-13
MD5: f5fd701f1bed28ddffa9aaf50a6e5c7c SHA-1: 6e184a05af889275b95f95874f22f952fcaa600a SHA-256: f2fdf421f524c10a609f83c9608ebf1633d549b6e8258ee257d1176e3aeb0767
200 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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.
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://netcdn.xyz/app/479516143/how-to-make-a-free-server-in-minecraft-java-game-hack.
  • 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 https://netcdn.xyz/app/479516143/how-to-make-a-free-server-in-minecraft-java-game-hack In PDF document text
    • https://diendientuvn.com/public/upload/files/descargar-coin-master-hackeado_GM406889139.pdfIn PDF document text
    • https://diendientuvn.com/public/upload/files/how-to-get-free-daily-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://diendientuvn.com/public/upload/files/free-roblox-codes_GM431946152.pdfIn PDF document text
    • https://diendientuvn.com/public/upload/files/free-minecraft-windows-10-with-java_GM479516143.pdfIn PDF document text
    • https://diendientuvn.com/public/upload/files/coin-master-free-spin-no-offers_GM406889139.pdfIn PDF document text
    • https://diendientuvn.com/public/upload/files/free-robux-generator-for-roblox-2021_GM431946152.pdfIn PDF document text
    • https://diendientuvn.com/public/upload/files/roblox-hack_GM431946152.pdfIn PDF document text
    • https://diendientuvn.com/public/upload/files/instant-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://diendientuvn.com/public/upload/files/games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://diendientuvn.com/public/upload/files/online-hacking-tricks-coin-master_GM406889139.pdfIn PDF document text
    • https://diendientuvn.com/public/upload/files/ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://diendientuvn.com/public/upload/files/how-can-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://diendientuvn.com/public/upload/files/roblox-lovenet_GM431946152.pdfIn PDF document text
    • https://diendientuvn.com/public/upload/files/free-spins-coin-master-april-2021_GM406889139.pdfIn PDF document text
    • https://diendientuvn.com/public/upload/files/coin-master-email-rewards_GM406889139.pdfIn PDF document text
    • https://diendientuvn.com/public/upload/files/free-robux-meme_GM431946152.pdfIn PDF document text
    • https://diendientuvn.com/public/upload/files/claim-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://diendientuvn.com/public/upload/files/mobihack-roblox-hack_GM431946152.pdfIn PDF document text
    • https://diendientuvn.com/public/upload/files/how-to-get-robux-easy_GM431946152.pdfIn PDF document text
    • https://diendientuvn.com/public/upload/files/weird-roblox_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
stream_003_off00004e0d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E0D 24792 bytes
SHA-256: 00ec2b92d31f306e13ad123432ba62d29af27bd2dbd721035223f3b9b80aef73
font_01_sfnt_off000086da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86DA 18324 bytes
SHA-256: d37ccdf2b735bf83da39a9c8e47095f79c8825f672a8e18203c6da1c4a675ee7

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