Malicious PDF — malware analysis report

Static analysis result for SHA-256 75eab71383661d15…

MALICIOUS

PDF

35.3 KB Created: 2021-06-26 11:07:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 993bef2c0a15793276d9a5972cec9bc4 SHA-1: ea2a49992a6db5402ccd2fa3e2a11fac7b1905c0 SHA-256: 75eab71383661d153247c93878b20a3524cc3eedbcefd3233f2f77ddc8bbf326
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of free in-game currency and hacks for popular games to entice users. It contains multiple links to redirector infrastructure, specifically http://netcdn.co/app/431946152/rbuxcheats-club-roblox-hack-gold-generator-game-hack, which is flagged as malicious. The document body and embedded URLs strongly suggest a phishing or scam attempt designed to lead users to potentially harmful content or further malicious downloads.

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/rbuxcheats-club-roblox-hack-gold-generator-game-hack In PDF document text
    • https://elearning.min21jkt.sch.id/__statics/gudangsoal/files/free-robux-app-play-games-earn-robux_GM431946152.pdfIn PDF document text
    • https://elearning.min21jkt.sch.id/__statics/gudangsoal/files/earn-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.min21jkt.sch.id/__statics/gudangsoal/files/1m-stepford-county-railway-roblox-script-hacks_GM431946152.pdfIn PDF document text
    • https://elearning.min21jkt.sch.id/__statics/gudangsoal/files/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.min21jkt.sch.id/__statics/gudangsoal/files/coin-master-hack-version-2021-free-download_GM406889139.pdfIn PDF document text
    • https://elearning.min21jkt.sch.id/__statics/gudangsoal/files/how-do-you-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://elearning.min21jkt.sch.id/__statics/gudangsoal/files/free-spin-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://elearning.min21jkt.sch.id/__statics/gudangsoal/files/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdfIn PDF document text
    • https://elearning.min21jkt.sch.id/__statics/gudangsoal/files/roblox-how-to-get-free-stylish-animation_GM431946152.pdfIn PDF document text
    • https://elearning.min21jkt.sch.id/__statics/gudangsoal/files/robux-hacks-2021_GM431946152.pdfIn PDF document text
    • https://elearning.min21jkt.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-downloading-any-apps_GM431946152.pdfIn PDF document text
    • https://elearning.min21jkt.sch.id/__statics/gudangsoal/files/best-free-roblox-executor_GM431946152.pdfIn PDF document text
    • https://elearning.min21jkt.sch.id/__statics/gudangsoal/files/minecraft-reach-hack_GM479516143.pdfIn PDF document text
    • https://elearning.min21jkt.sch.id/__statics/gudangsoal/files/spin-free-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.min21jkt.sch.id/__statics/gudangsoal/files/roblox-free-catalog-things_GM431946152.pdfIn PDF document text
    • https://elearning.min21jkt.sch.id/__statics/gudangsoal/files/roblox-fun-com-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.min21jkt.sch.id/__statics/gudangsoal/files/free-robux-real_GM431946152.pdfIn PDF document text
    • https://elearning.min21jkt.sch.id/__statics/gudangsoal/files/free-robux-android_GM431946152.pdfIn PDF document text
    • https://elearning.min21jkt.sch.id/__statics/gudangsoal/files/coin-master-hack-mod-apk-35-8_GM406889139.pdfIn PDF document text
    • https://elearning.min21jkt.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins_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
font_00_sfnt_off000031c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31C4 22552 bytes
SHA-256: 6009605fd9d359c1fee49ba861902af268d7bbfcda49b0eb412c9fa46a471ce3
font_01_sfnt_off0000643c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x643C 19240 bytes
SHA-256: dc42b358030584f87bf825b58a344a34cdb6fafb0ae2d94c170c50839344f408

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