Malicious PDF — malware analysis report

Static analysis result for SHA-256 cff6611b8f317fbe…

MALICIOUS

PDF

34.9 KB Created: 2021-07-03 13:04:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 47c0377c2b685e7a980ff78e231c8b91 SHA-1: 6abb6b8727037b87ef372028254dfcab52749ec3 SHA-256: cff6611b8f317fbea215068d82d5d0cd58c35ed6efc4104f8f51cb94d0b8bd7b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, disguised as a game hack generator. This lure is intended to trick users into visiting the malicious site, likely to download further malware or engage in phishing. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the embedded URL is a high-confidence indicator of malicious intent.

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.tw/app/406889139/coin-master-hack-programmers-game-hack In PDF document text
    • https://daring.mtsn7sumedang.sch.id/__statics/gudangsoal/files/free-robux-not-fake_GM431946152.pdfIn PDF document text
    • https://daring.mtsn7sumedang.sch.id/__statics/gudangsoal/files/getrobux-ninja_GM431946152.pdfIn PDF document text
    • https://daring.mtsn7sumedang.sch.id/__statics/gudangsoal/files/free-spins-coin-master-android_GM406889139.pdfIn PDF document text
    • https://daring.mtsn7sumedang.sch.id/__statics/gudangsoal/files/free-tiktok-likes-no-verification_GM835599320.pdfIn PDF document text
    • https://daring.mtsn7sumedang.sch.id/__statics/gudangsoal/files/sites-for-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://daring.mtsn7sumedang.sch.id/__statics/gudangsoal/files/how-to-hack-a-roblox-password-with-cheat-engine_GM431946152.pdfIn PDF document text
    • https://daring.mtsn7sumedang.sch.id/__statics/gudangsoal/files/what-tiktok-free-views-app_GM835599320.pdfIn PDF document text
    • https://daring.mtsn7sumedang.sch.id/__statics/gudangsoal/files/how-to-get-free-tiktok-fans-without-human-verification_GM835599320.pdfIn PDF document text
    • https://daring.mtsn7sumedang.sch.id/__statics/gudangsoal/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://daring.mtsn7sumedang.sch.id/__statics/gudangsoal/files/cpbildco-robux_GM431946152.pdfIn PDF document text
    • https://daring.mtsn7sumedang.sch.id/__statics/gudangsoal/files/coin-master-invite-friends-hack_GM406889139.pdfIn PDF document text
    • https://daring.mtsn7sumedang.sch.id/__statics/gudangsoal/files/free-roblox-money_GM431946152.pdfIn PDF document text
    • https://daring.mtsn7sumedang.sch.id/__statics/gudangsoal/files/www-free-robux-com_GM431946152.pdfIn PDF document text
    • https://daring.mtsn7sumedang.sch.id/__statics/gudangsoal/files/free-spins-coin-master-march-2021_GM406889139.pdfIn PDF document text
    • https://daring.mtsn7sumedang.sch.id/__statics/gudangsoal/files/descargar-coin-master-hackeado_GM406889139.pdfIn PDF document text
    • https://daring.mtsn7sumedang.sch.id/__statics/gudangsoal/files/free-robux-com-2021_GM431946152.pdfIn PDF document text
    • https://daring.mtsn7sumedang.sch.id/__statics/gudangsoal/files/free-coins-and-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://daring.mtsn7sumedang.sch.id/__statics/gudangsoal/files/abd-roblox_GM431946152.pdfIn PDF document text
    • https://daring.mtsn7sumedang.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://daring.mtsn7sumedang.sch.id/__statics/gudangsoal/files/how-to-get-a-free-unicorn-in-adopt-me-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
font_00_sfnt_off00003208.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3208 22880 bytes
SHA-256: d0ab32ff24828d396a678f830da01048c97ae1ab0c9d851d19d4432db55a169e
font_01_sfnt_off00006544.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6544 18416 bytes
SHA-256: 5741a127261724fddf521fc94ebfc06f31583a26a9f94a4c147a021759ab8b48

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