Malicious PDF — malware analysis report

Static analysis result for SHA-256 71f7971ee1da9332…

MALICIOUS

PDF

35.3 KB Created: 2021-07-01 13:37:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: bf4819717e6b593cfdff06bdee2b5aeb SHA-1: 55ad667202a00308a2d5822854c439d2faa6272a SHA-256: 71f7971ee1da93324eaaa0bf8946d695241e5ffb3ab2aad3ecf55ed873729f0b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains embedded links that redirect to malicious infrastructure, masquerading as game hacks or generators. The primary link, http://netcdn.co/app/431946152/roblox-free-draw-2-tutorial-game-hack, is identified as a malicious redirector. The document's content and structure strongly suggest a phishing or scam attempt, likely to deliver further malware or steal credentials.

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/roblox-free-draw-2-tutorial-game-hack In PDF document text
    • https://elearning.diniyyahpasia.sch.id/__statics/gudangsoal/files/2021-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://elearning.diniyyahpasia.sch.id/__statics/gudangsoal/files/www-cheatsk-com-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://elearning.diniyyahpasia.sch.id/__statics/gudangsoal/files/minecraft-pocket-edition-download-free-pe-calculator_GM479516143.pdfIn PDF document text
    • https://elearning.diniyyahpasia.sch.id/__statics/gudangsoal/files/www-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://elearning.diniyyahpasia.sch.id/__statics/gudangsoal/files/youtube-free-robux-scam_GM431946152.pdfIn PDF document text
    • https://elearning.diniyyahpasia.sch.id/__statics/gudangsoal/files/free-coins-2021-coin-master-link_GM406889139.pdfIn PDF document text
    • https://elearning.diniyyahpasia.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://elearning.diniyyahpasia.sch.id/__statics/gudangsoal/files/roblox-test-server-free-obc_GM431946152.pdfIn PDF document text
    • https://elearning.diniyyahpasia.sch.id/__statics/gudangsoal/files/robuxmatchcon_GM431946152.pdfIn PDF document text
    • https://elearning.diniyyahpasia.sch.id/__statics/gudangsoal/files/sites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.diniyyahpasia.sch.id/__statics/gudangsoal/files/how-to-make-clothes-without-hacks-or-bc-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.diniyyahpasia.sch.id/__statics/gudangsoal/files/piano-player-hack-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.diniyyahpasia.sch.id/__statics/gudangsoal/files/free-robux-no-download_GM431946152.pdfIn PDF document text
    • https://elearning.diniyyahpasia.sch.id/__statics/gudangsoal/files/best-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://elearning.diniyyahpasia.sch.id/__statics/gudangsoal/files/free-robux-codes-2021-not-used_GM431946152.pdfIn PDF document text
    • https://elearning.diniyyahpasia.sch.id/__statics/gudangsoal/files/how-to-get-a-headless-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://elearning.diniyyahpasia.sch.id/__statics/gudangsoal/files/can-you-get-roblox-studio-free_GM431946152.pdfIn PDF document text
    • https://elearning.diniyyahpasia.sch.id/__statics/gudangsoal/files/how-to-hack-robux_GM431946152.pdfIn PDF document text
    • https://elearning.diniyyahpasia.sch.id/__statics/gudangsoal/files/free-spins-and-coins-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.diniyyahpasia.sch.id/__statics/gudangsoal/files/free-robux-no-survey_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_off000030d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30D6 22648 bytes
SHA-256: 561891eca1ea349f44ac9cfdf71e5fbe775e7a84db4524f7dd9850f8893cdce2
font_01_sfnt_off00006372.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6372 19472 bytes
SHA-256: 5a27f0e04ad3fe12143d95a2bdbef5eec870b52731436f42f9b02873818880e6

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