Malicious PDF — malware analysis report

Static analysis result for SHA-256 edb073511d763884…

MALICIOUS

PDF

34.2 KB Created: 2021-06-29 21:11:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 14a95841fa0a10fc1815d31fc49e5f24 SHA-1: aa14ea4f2604b6788536d25755d9ea4bef83a43b SHA-256: edb073511d7638844312200683a8d663a5d4476365723a2e8e16979427fb0d93
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

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-v3rmillion-cheat-engine-bypass-hack-game-hack PDF link annotation
    • http://elibrary.perludem.org/repository/how-to-buy-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/roblox-free-play_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-spins-coin-master-unlimited_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-roblox-gift-cards-2021_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/roblox-hack-red-boy_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/minecraft-pe-hack-client_GM479516143.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/how-to-change-username-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/roblox-free-suit-t-shirt_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/free-robux-come_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/cheat-engine-55-roblox_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/coin-master-hack-app-download-free_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/games-to-get-you-free-robux_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/moonactive-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/get-free-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/denis-how-to-get-free-robux-im-not-even-kidding_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/how-to-get-free-pints-on-earn-robux-gg_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/how-to-earn-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/how-to-get-robux-for-free-on-pc-without-downloading_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/giving-away-free-robux-codes_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_off00002e24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E24 21756 bytes
SHA-256: b79d4c0a69288da1296263d0afe38aa43c5479edfff60a2cddc6be0fd48ffd8e
font_01_sfnt_off00005dbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DBB 19972 bytes
SHA-256: 517f283d7efa4033d6ea65666327f3965f0eb3d557e5aedb0c40b27c86faca7a