Malicious PDF — malware analysis report

Static analysis result for SHA-256 57282478e5c90d6b…

MALICIOUS

PDF

34.1 KB Created: 2021-07-05 21:50:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 42f74bc6a285ebe9fac34c7a35e32969 SHA-1: 3b9faeded7670c313803aa1bf91d0379819dae90 SHA-256: 57282478e5c90d6b9d4cb08bfdee995c1b30f64f9779add801cf1ebc08ca575f
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a high-risk heuristic indicating it links to a 'free generator / game hack' redirector. The embedded URL, http://netcdn.tw/app/835599320/tiktok-free-on-google-game-hack, is likely used to deliver a malicious payload or redirect to a phishing site. The document body also contains this URL, reinforcing the lure.

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/835599320/tiktok-free-on-google-game-hack PDF link annotation
    • http://digilib.iailm.ac.id//repository/best-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-links-for-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/roblox-free-game-free-to-play_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/roblox-hack-tool-no-survey-no-download_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/can-you-still-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-printable-roblox-images_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-get-free-bloxbux-in-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/roblox-speed-client-hack-2021_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/hack-roblox-juegos_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/roblox-hack-client-pc_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/how-do-i-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/coin-master-hack-activegamer_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/coin-master-hacks-for-pet-food_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-get-free-things-in-roblox-2021_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-wings-promo-codes-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/dll-script-to-hack-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/one-piece-millenium-roblox-hack-stats_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-roblox-purchases_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_off0000310d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x310D 22488 bytes
SHA-256: cdf776e8d3b1e18e38b757afa9354678f8efeaaf232fccaec806be7d3e12ff32
font_01_sfnt_off0000633e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x633E 18048 bytes
SHA-256: ec69cdc702944794f4e3a5298c9432387120d174f2770326704dd34bc4f42085

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