Malicious PDF — malware analysis report

Static analysis result for SHA-256 67931efb88a917b5…

MALICIOUS

PDF

45.3 KB Created: 2021-06-03 07:00:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 0f69db5d06f80346ecd374d7941244d8 SHA-1: a8fa803e2c668779acf3fa643558a2409a084984 SHA-256: 67931efb88a917b519f112157d79dc78ee49b93526fceedff28ebf1a2ec44fd2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple links designed to lure users into clicking on what appears to be a game hack generator or free download. These links redirect to malicious infrastructure, as indicated by the 'PDF_GAME_HACK_REDIRECT_LURE' and 'PDF_MALICIOUS_REDIRECTOR_LINK' heuristics. The ML classifier also flagged the document as malicious with high confidence. No scripts were extracted, but the document's structure and embedded URLs strongly suggest a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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/can-i-hack-coin-master-with-lucky-patcher-game-hack In PDF document text
    • http://zagorjeadventureteam.hr/files/haktuts-coin-master-today_GM406889139.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/free-robux-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://zagorjeadventureteam.hr/files/minecraft-java-server-hosting-free_GM479516143.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/coin-master-no-download-app-but-play-for-free_GM406889139.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/coin-master-game-for-pc-free-download_GM406889139.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/coin-master-free-spins-and-coins-daily-links_GM406889139.pdfIn PDF document text
    • http://zagorjeadventureteam.hr/files/how-long-is-the-minecraft-free-trial_GM479516143.pdfIn PDF document text
    • http://zagorjeadventureteam.hr/files/free-robux-no-verification-needed_GM431946152.pdfIn PDF document text
    • http://zagorjeadventureteam.hr/files/coin-master-hack-apk-with-fb-login-2021_GM406889139.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/free-free-robux_GM431946152.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/can-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/coin-master-free-gifts_GM406889139.pdfIn PDF document text
    • http://zagorjeadventureteam.hr/files/free-minecraft-gift-card_GM479516143.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/how-do-you-hack-roblox_GM431946152.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/roblox-free-clothes-codes_GM431946152.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/how-to-get-free-robux-as-a-kid_GM431946152.pdfIn PDF document text
    • http://zagorjeadventureteam.hr/files/free-robux-on-phone_GM431946152.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/free-coins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/how-to-hack-m-coins-mcpe-master_GM406889139.pdfIn PDF document text
    • https://www.urcouponsdeal.com/2019/03/coin-master-free-spin-and-coin-links.htmlIn 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_004_off00005506.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5506 24988 bytes
SHA-256: 4d7a5cace350a168142af9301f205a46cdf9bfa9a3fd71ea26665fdefe341665
font_01_sfnt_off00008dd4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DD4 18552 bytes
SHA-256: 8be759f3e3349301e7dcc78824bb158111b4f4e5695afa9281379139d383196f

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