Malicious PDF — malware analysis report

Static analysis result for SHA-256 bfbeafd13f02bc51…

MALICIOUS

PDF

35.8 KB Created: 2021-07-03 21:28:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 3838ca90cf8537963a2fba49a6fff3d1 SHA-1: 25ffe1cf20509ba46ab594fcbbd22f08cf39b5d7 SHA-256: bfbeafd13f02bc518dad7ad51b3dc7f6db055accaf16af2b328c4a9478283075
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a lure for game hacks and free in-game currency, directing users to a known malicious redirector. The document body and heuristics indicate a phishing attempt designed to lead users to malicious infrastructure. While no scripts were extracted, the presence of embedded URLs and the nature of the lure strongly suggest a phishing or scam campaign.

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/how-do-you-get-free-food-in-coin-master-game-hack In PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/roblox-promo-codes-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/all-free-items-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/coin-master-mod-version-free-download_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/free-roblox-cards-pin-number_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/roblox-hack-ga_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/get-free-coin-master-coins_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/free-robux-pastebin_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/coin-master-free-spins--coins-2021_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/how-do-i-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/how-to-hack-peoples-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/coin-master-free-coin-and-spin-app_GM406889139.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/how-to-get-free-robux-december-2021_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/robux-hack-no-apps_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/coin-master-daily-gift-free-spins-and-coins-link-today_GM406889139.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/roblox-cash-grab-simulator-cheat_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/static-moonactive-net_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/how-to-hack-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/coin-master-400-spin-link-today_GM406889139.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/free-robux-script_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 5

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003313.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3313 23724 bytes
SHA-256: 0ebac71045d845785f1884ea16819ffcef7cf7b87a7f437ca9b3f2bbb3e51d5c
font_01_sfnt_off000067b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67B1 18808 bytes
SHA-256: 5b19657b867659428d4d777ae35749cc306009ca32d66e2ab307e9e90d021f01

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