Malicious PDF — malware analysis report

Static analysis result for SHA-256 b69d4e6528d86af0…

MALICIOUS

PDF

36.2 KB Created: 2021-06-29 20:08:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e37bb73c52eb7b911c0db269755a7e7f SHA-1: f849921c94193746a998d14d39ab05e80ecd5e46 SHA-256: b69d4e6528d86af00359b092677f2995ea1b81e8fb06d952ee5a7e6ecf7995ba
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that lead to a known malicious redirector, disguised as game hacks and generators. The ML classifier strongly flagged this PDF as malicious, and the presence of redirector links indicates a phishing or scam attempt. No scripts were extracted, but the document's structure and embedded links suggest it is designed to trick users into visiting malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/island-royale-roblox-hack-esp-script-pastebin-game-hack In PDF document text
    • https://library.stikeswnpalu.ac.id/repository/roblox-hacked-version-download_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-builders-club-2021-roblox_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/minecraft-the-complete-handbook-collection_GM479516143.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/how-do-you-get-free-food-on-coin-master_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/how-do-i-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/roblox-premium-free_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/coin-master-hack-app-android_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/claim-free-robux_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/minecraft-dungeons-free_GM479516143.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/earn-robux-today_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/google-sites-roblox-hack-online_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/coin-master-guide-to-free-spins-and-rewards_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/coin-master-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-robux-no-human-verification-or-survey-or-download_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/how-to-change-your-name-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/roblox-free-robux-2021-august-promocode-yt_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-spin-coin-master-instagram_GM406889139.pdfIn PDF document text
    • https://www.roblox.com/.IIn 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_off00003640.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3640 22132 bytes
SHA-256: 0258602ffa797feb415bc1795b8a2431b31ead8ffe4c0bc37f3fd9daa03f2aae
font_01_sfnt_off0000670d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x670D 19564 bytes
SHA-256: 0435468fb6edcec079fc605ff560fa5416a36c1891cc4c50cd24f3182ced0f52

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