Malicious PDF — malware analysis report

Static analysis result for SHA-256 7deb39cd78e8b73a…

MALICIOUS

PDF

34.2 KB Created: 2021-07-05 23:10:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: b992e2529b30dfef1cbd5cc859e2c29e SHA-1: 1c162bf1163e628639b2e5eced442866bdd3e36a SHA-256: 7deb39cd78e8b73af9564bb5a075bcc983addea67cc6acda89cce320d68ec1a8
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links and a document body that explicitly advertises 'free Robux' and game hacks. The primary heuristic indicates that the PDF links to a redirector designed to lure users with game hack promises. The embedded URLs likely lead to further malicious content or phishing pages, aiming to exploit the user's interest in obtaining in-game currency or cheats. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/431946152/how-to-free-robux-game-hack PDF link annotation
    • http://fkunismuh.org/perpustakaan//repository/free-robux-app_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/roblox-hack-ninja-legends_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/how-long-is-the-minecraft-free-trial_GM479516143.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/roblox-free-clothes-codes_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/link-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/noto-clip-hackes-roblox_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/minecraft-packs-free_GM479516143.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/how-to-get-free-bc-tbc-or-obc-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/free-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/meep-city-free-plus-hack-roblox_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/roblox-hacking-tool-prank_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/roblox-creator-free-vip-server_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/how-do-you-get-free-robux-2021-march_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/how-to-play-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/get-free-roblox-game-plays_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/free-robux-gift-card-codes_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/how-to-hack-roblox-booga-booga-for-mac_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/coin-master-levels_GM406889139.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/easy-roblox-gui-hack-imouter_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/free-daily-spins-and-coins-for-coin-master_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_off00003017.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3017 22184 bytes
SHA-256: 357e8c7e9457fd41d7820908ec4ebcfc8372737044fe459a2ed30e0b9aac3e07
font_01_sfnt_off0000614a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x614A 18880 bytes
SHA-256: b6c4639a0efa27a474f01e4d286fb143e2370880626048fbfb2abea6535030cf

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