Malicious PDF — malware analysis report

Static analysis result for SHA-256 4763678805dd86c0…

MALICIOUS

PDF

47.6 KB Created: 2021-06-04 01:26:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ed97678f644b0a986778c8f87116209c SHA-1: b980b479fe70b4f44d076ad1f6014e37a6bd863e SHA-256: 4763678805dd86c042dbed97579bc40e450291c1bb97d6b19dcb1739b2a22e4e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links designed to lure users into downloading "hacks" or "free spins" for games like Coin Master and Roblox. The primary link, https://netcdn.online/app/406889139/coin-master-hack-version-download-2021-game-hack, is identified as a malicious redirector. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a phishing or scam attempt, likely leading to malware download or further credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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.online/app/406889139/coin-master-hack-version-download-2021-game-hack In PDF document text
    • http://ebook.itn.ac.id/repository/coin-master-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/how-to-hack-to-get-robux_GM431946152.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/coin-master-spin-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/coin-master-free-spins-and-coins-daily_GM406889139.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/free-robux-link_GM431946152.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/roblox-jailbreak-hack-download_GM431946152.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/coun-master_GM406889139.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/how-to-make-a-server-in-minecraft-java-for-free_GM479516143.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/how-to-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/free-spins-coin-master-blogspot_GM406889139.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/coin-master-hack-ios-app_GM406889139.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/hackear-juego-coin-master-espaol_GM406889139.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/coin-free-spin_GM406889139.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/dailyrobux_GM431946152.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/is-coin-master-free_GM406889139.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/roblox-login-hack_GM431946152.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/how-to-get-minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/how-to-hack-mad-city-roblox-step-by-step_GM431946152.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/earn-robux-today_GM431946152.pdfIn PDF document text
    • https://coinmasterspinandcoin.comIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005314.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5314 24436 bytes
SHA-256: 7f71a84f0f0f524fee3498e2d185a443c7b8e2e591c2267a0f1a0e3b55abeaa1
font_01_sfnt_off00008b26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B26 2944 bytes
SHA-256: a0301b7f2c576e4a889a11eed4f4f7770c47239120b218cd3fd1d2cb36c2aaf5
font_02_sfnt_off0000954f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x954F 18832 bytes
SHA-256: 10a49c8f5e0c2228bf8891dcd296cb3cf64f302ec606424858ebb68f2fddb877

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