Malicious PDF — malware analysis report

Static analysis result for SHA-256 4456e74bd02b8a8c…

MALICIOUS

PDF

42.5 KB Created: 2021-05-14 11:34:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-11
MD5: 9be9b58f1bcb0a75987eb56c9333c863 SHA-1: 689c4bba2e19d9d8829cd33737eb823ddfa9d009 SHA-256: 4456e74bd02b8a8c5b281e035ee7601ab5f9430a7c3cc6847a4c321ecd22d8e9
160 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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 https://netcdn.xyz/app/406889139/coin-master-free-spins-that-really-game-hack In PDF document text
    • http://www.marambio.com.ar/images/free-robux-no-verification-at-all_GM431946152.pdfIn PDF document text
    • http://www.marambio.com.ar/images/free-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • http://www.marambio.com.ar/images/free-fire-coin-master_GM406889139.pdfIn PDF document text
    • http://www.marambio.com.ar/images/coin-master-free-spins-link-2021-no-verification-deutsch_GM406889139.pdfIn PDF document text
    • http://www.marambio.com.ar/images/free-robux-earn_GM431946152.pdfIn PDF document text
    • http://www.marambio.com.ar/images/free-roblox-accounts-2021-with-robux_GM431946152.pdfIn PDF document text
    • http://www.marambio.com.ar/images/free-roblox-accounts-that-work_GM431946152.pdfIn PDF document text
    • http://www.marambio.com.ar/images/free-robux-only-username_GM431946152.pdfIn PDF document text
    • http://www.marambio.com.ar/images/roblox-free-roblox_GM431946152.pdfIn PDF document text
    • http://www.marambio.com.ar/images/how-to-get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://www.marambio.com.ar/images/minecraft-jar-free_GM479516143.pdfIn PDF document text
    • http://www.marambio.com.ar/images/apps-for-free-robux_GM431946152.pdfIn PDF document text
    • http://www.marambio.com.ar/images/free-links-for-free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.marambio.com.ar/images/coin-master-hack-online-no-human-verification_GM406889139.pdfIn PDF document text
    • http://www.marambio.com.ar/images/how-to-get-roblox-premium-for-free_GM431946152.pdfIn PDF document text
    • http://www.marambio.com.ar/images/coin-master-free-spins-hack-download_GM406889139.pdfIn PDF document text
    • http://www.marambio.com.ar/images/free-foxy-food-coin-master_GM406889139.pdfIn PDF document text
    • http://www.marambio.com.ar/images/martian-lettuce-coin-master-free_GM406889139.pdfIn PDF document text
    • http://www.marambio.com.ar/images/google-roblox-games_GM431946152.pdfIn PDF document text
    • http://www.marambio.com.ar/images/coin-master-daily-free-spins-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
stream_003_off00004ab2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AB2 25016 bytes
SHA-256: 8459695e2bd32e266494ad728268267c4760a8e3f48f52e0f3a74a689cee7504
font_01_sfnt_off000083e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83E2 18308 bytes
SHA-256: 9280bacae3ad0da4146be41547e1663b6e8aa07aae351ce46264d323328a6377

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