Malicious PDF — malware analysis report

Static analysis result for SHA-256 dedc4f4b736b5ff8…

MALICIOUS

PDF

35.5 KB Created: 2021-06-29 10:36:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 9723d8e9a80cbace54208633670982f6 SHA-1: dff6f2fc055a2e06be2e4dce160e3136ae5fb5be SHA-256: dedc4f4b736b5ff8c66e9ad138de1b6fdc28d063f0591a75d9ef0a96fbe9eb25
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs, with a primary focus on 'game hack' lures, such as 'Roblox Noclip Hack 2021'. The heuristic firings confirm the presence of external URIs and a specific lure for game hacks, indicating a social engineering attempt to trick users into visiting potentially malicious websites. The ML classifier strongly flags this PDF as malicious, supporting the conclusion that it is designed to lead users to harmful content or downloads.

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-noclip-hack-2021-game-hack PDF link annotation
    • http://digilib.akperkabpurworejo.ac.id//repository/how-to-get-java-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://digilib.akperkabpurworejo.ac.id/repository/free-robux-codew_GM431946152.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/wurst-hacked-client-112-2_GM479516143.pdfIn PDF document text
    • https://digilib.akperkabpurworejo.ac.id/repository/roblox-gift-card-free-codes_GM431946152.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/cheat-roblox-big-paint-ball_GM431946152.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/coin-master-free-spins-hack-2021_GM406889139.pdfIn PDF document text
    • https://digilib.akperkabpurworejo.ac.id/repository/addmin-comands-in-roblox-hacking_GM431946152.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/who-to-get-free-shadow-item-pack-free-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.akperkabpurworejo.ac.id/repository/how-to-hack-destruction-simulator-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/minecraft-112-hacked-client_GM479516143.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/delete-anything-roblox-hack-script_GM431946152.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/alien-backpack-roblox-free_GM431946152.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/coin-master-hacks-xyz_GM406889139.pdfIn PDF document text
    • https://digilib.akperkabpurworejo.ac.id/repository/minecraft-java-edition-free-code_GM479516143.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/free-robux-hack-quick-and-easy_GM431946152.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/how-to-get-free-robux-no-scam_GM431946152.pdfIn PDF document text
    • https://digilib.akperkabpurworejo.ac.id/repository/how-dto-get-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/how-to-hack-roblox-nopde-engine_GM431946152.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id//repository/i-want-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id//repository/coin-master-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_off0000334e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x334E 22232 bytes
SHA-256: f12207ea0f51620f9e4d6b00b2d0a157f30e2e9610a9f45b308dad4ff481c8ea
font_01_sfnt_off0000649a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x649A 19352 bytes
SHA-256: d8f77e8ded6863815401c014e942e461c6f0f1dc04c32625687430fb80bfa368

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