Malicious PDF — malware analysis report

Static analysis result for SHA-256 fdf86a29b91482dd…

MALICIOUS

PDF

46.1 KB Created: 2021-06-10 20:58:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 66d9a64859274e09be1533d3998fa668 SHA-1: 1d1a312d352697f6cb0aed22ba6661ac48618a24 SHA-256: fdf86a29b91482dddd91a97add33d8dd66873f93c99c391c06425d28ad084bdb
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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.tw/app/431946152/hacking-code-text-chat-roblox-game-hack PDF link annotation
    • http://www.fkunismuh.org/perpustakaan/repository/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/hack-coin-master-for-android_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/coin-master-free-spins-link-blogspot-2021_GM406889139.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/robux-generator-without-verification_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/coin-master-hack-tool-access-online-generator_GM406889139.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/appsmob-info-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/download-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/robux-prices_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/get-free-spins-on-coin-master-no-human-verification_GM406889139.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/nasl-roblox-a-cheat-engine-dan-hile-yapilir_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/minecraft-xbox-free_GM479516143.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/todays-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/coin-master-server-hack_GM406889139.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/roblox-data-breach_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/hack-coin-master-32-mod-apk_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/how-to-get-more-robux_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/coin-master-free-coins_GM406889139.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/coin-master-free-spin-link-app_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/coin-master-hack-programers_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/roblox-character-free_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

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
stream_004_off000054b8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x54B8 25256 bytes
SHA-256: 8ab47456e1c173a7f061ea3352a194e9aad1947da14a09fb6f3a7f2e94359cb9
font_01_sfnt_off00008f32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F32 19032 bytes
SHA-256: 270cd60e405eb7e13cf98335a4d66ba14a5e8d75a5e38a69455a8098b1b92924

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