Malicious PDF — malware analysis report

Static analysis result for SHA-256 6928cd95a2ac71b3…

MALICIOUS

PDF

34.5 KB Created: 2021-06-27 13:27:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 95e1ba26bdde56a21277b474a24a8775 SHA-1: ea68c1b2310e6df31297f6b28d94598321354977 SHA-256: 6928cd95a2ac71b3f831aaba98b3d395b131db540927d781c415a97ba7e4e0d4
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-severity heuristic firing for a game hack redirect lure, specifically mentioning Roblox. The embedded URL 'http://netcdn.co/app/431946152/roblox-hacked-told-my-account-game-hack' is presented as a call-to-action. While no scripts were explicitly extracted, the nature of the lure and the embedded URL strongly suggest an attempt to redirect the user to a malicious site for credential harvesting or malware download.

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.co/app/431946152/roblox-hacked-told-my-account-game-hack PDF link annotation
    • http://lib.fekon.untad.ac.id/repository/free-minecraft-worlds_GM479516143.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/daily-free-spin-coin-master-link_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/how-to-get-free-robux-on-ipad-easy_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-robux-codes-2021-not-used_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/roblox-booga-booga-cheat-codes_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/robux-adder_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/cheat-code-roblox-superhero-tycoon_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/hacking-of-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-robux-no-human-verification-and-no-survey_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/roblox-hacking-website_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/hack-roblox-steve-one-piece-roblox-auto-farm-chest_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/how-to-hack-roblox-murder-mystery-2_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-roblox-commands_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/roblox-that-you-can-play-for-free_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/roblox-fly-hack_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/roblox-hack-v2-11_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/open-roblox-hack-script_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/coin-master-hack-cheat-generator-d_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/coin-master-free-spin-link-today-2021_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_off000030c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30C1 21828 bytes
SHA-256: eec3454a4fd66b717fd9c916756d1929234618e666e7a6b914118b77668c8eee
font_01_sfnt_off000060a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60A8 19448 bytes
SHA-256: 70a6b0900763cfbfd16280e02f9451cbff6a7db54e3ba9967435b2bde66352b6

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