Malicious PDF — malware analysis report

Static analysis result for SHA-256 d740b8f9fe3a2c68…

MALICIOUS

PDF

46.5 KB Created: 2021-05-13 15:31:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 79a2dafce156ca721a41c4656da825fd SHA-1: 84085da878ebf76aee10e709dfb496a8902e8cdf SHA-256: d740b8f9fe3a2c682ce057646dd2cda990505db16b22e0994938ab61dc522455
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links designed to lure users into clicking on what appears to be a 'free Robux hack' or game generator. The primary link redirects to known malicious infrastructure, indicating a phishing or scam attempt. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a social engineering tactic to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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.xyz/app/431946152/robux-hack-no-human-verification-game-hack In PDF document text
    • https://elearning.man3hss.sch.id/__statics/gudangsoal/files/free-robux-apps-that-work_GM431946152.pdfIn PDF document text
    • https://elearning.man3hss.sch.id/__statics/gudangsoal/files/hack-coin-master-nyc_GM406889139.pdfIn PDF document text
    • https://elearning.man3hss.sch.id/__statics/gudangsoal/files/easy-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.man3hss.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-for-free-on-laptop_GM479516143.pdfIn PDF document text
    • https://elearning.man3hss.sch.id/__statics/gudangsoal/files/coin-master-free-foxy-food_GM406889139.pdfIn PDF document text
    • https://elearning.man3hss.sch.id/__statics/gudangsoal/files/getrobux-ninja_GM431946152.pdfIn PDF document text
    • https://elearning.man3hss.sch.id/__statics/gudangsoal/files/rbxoffer-com-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.man3hss.sch.id/__statics/gudangsoal/files/roblox-sexually-abused_GM431946152.pdfIn PDF document text
    • https://elearning.man3hss.sch.id/__statics/gudangsoal/files/how-do-u-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.man3hss.sch.id/__statics/gudangsoal/files/how-to-make-a-roblox-group-for-free_GM431946152.pdfIn PDF document text
    • https://elearning.man3hss.sch.id/__statics/gudangsoal/files/extra-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.man3hss.sch.id/__statics/gudangsoal/files/coin-master-hack-mod-apk-unlimited-spin-download_GM406889139.pdfIn PDF document text
    • https://elearning.man3hss.sch.id/__statics/gudangsoal/files/free-minecraft-pe-server_GM479516143.pdfIn PDF document text
    • https://elearning.man3hss.sch.id/__statics/gudangsoal/files/robux-free-online_GM431946152.pdfIn PDF document text
    • https://elearning.man3hss.sch.id/__statics/gudangsoal/files/free-coin-spin-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.man3hss.sch.id/__statics/gudangsoal/files/coin-master-gold-cards-hack_GM406889139.pdfIn PDF document text
    • https://elearning.man3hss.sch.id/__statics/gudangsoal/files/free-spins-on-coin-master-game_GM406889139.pdfIn PDF document text
    • https://elearning.man3hss.sch.id/__statics/gudangsoal/files/coin-master-hack-2021-ios_GM406889139.pdfIn PDF document text
    • https://elearning.man3hss.sch.id/__statics/gudangsoal/files/free-robux-clothes_GM431946152.pdfIn PDF document text
    • https://elearning.man3hss.sch.id/__statics/gudangsoal/files/whats-robux_GM431946152.pdfIn 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
font_00_sfnt_off00004bb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4BB7 25784 bytes
SHA-256: fc0c3fc89e079d1cf73628193b298208ece03572f481501d5779782f76214fb8
font_01_sfnt_off00008778.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8778 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00009162.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9162 18868 bytes
SHA-256: 8c41f3ed2032476b4a245afad5cd23074bff3a00c17c7f8f9be8353034b253b9

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