Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf97ffaf4fc04848…

MALICIOUS

PDF

32.8 KB Created: 2021-07-05 07:43:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 93484497afb91f937a4f5a8a8eba9f0c SHA-1: 4c90abab054a810a01c6308ac34395dbc93061e7 SHA-256: cf97ffaf4fc04848c1bc261e3a4acfb0722696a6da959481459f63a4417738e4
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs and a high-confidence heuristic firing indicating it links to a 'free generator / game hack' redirector. The document body reinforces this by mentioning 'Games For Robux' and including numerous related URLs, suggesting a social engineering lure to drive traffic to potentially malicious sites. No scripts were extracted, but the primary attack pattern is the use of a malicious document to redirect users to external content.

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/games-for-robux-game-hack PDF link annotation
    • http://lib3tell.stptrisakti.net/repository/best-free-full-lua-and-lua-c-roblox-exploit_GM431946152.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/free-robux-obby-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/phantom-forces-hack-roblox-2021x2021_GM431946152.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/free-minecraft-coloring-pages_GM479516143.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/tiktok-free-view-iphone-wallpaper_GM835599320.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/free-spin-and-coin-blogspot-com_GM406889139.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/free-robux-reddit_GM431946152.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net//repository/free-robux-real-working_GM431946152.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net//repository/minecraft-pe-apk_GM479516143.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net//repository/tiktok-free-roblox-accounts_GM835599320.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/roblox-free-hair-codes_GM431946152.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/apocalypes-rising-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net//repository/roblox-pink-free-robux_GM431946152.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/free-items-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net//repository/get-free-gold-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/free-robux-no-human-verification-and-no-survey_GM431946152.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/how-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net//repository/coin-master-free-snacks-link_GM406889139.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/free-gfx-roblox_GM431946152.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/how-to-hack-roblox-passwords_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_off00002cf2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2CF2 21456 bytes
SHA-256: 2be4c3d9e67cab736f58f8bbbd5716e0a24274aa8b9ee914e99304f37cda7933
font_01_sfnt_off00005b2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B2C 18976 bytes
SHA-256: 090ea4c6042fee042727c6b8a892a5a58e907418997767bf433bab9fde8fbe7f

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