Malicious PDF — malware analysis report

Static analysis result for SHA-256 8eba2fec0790db78…

MALICIOUS

PDF

34.2 KB Created: 2021-07-05 21:23:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 71b628d218f87f7f2d53e2ee28b67b6d SHA-1: baedefed467df52a4ec4d962f90241f2d135e478 SHA-256: 8eba2fec0790db7811a3ea00ca6dfeaf17da51859ff33b8f6fa7caadbbd1a447
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 0.9824

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/free-robux-just-click-game-hack PDF link annotation
    • http://library.gkigadingserpong.org/repository/how-to-hack-coin-master-using-es-file_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/dayz-2-hack-roblox_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/roblox-jailbreak-cheats-download_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-candy-van-roblox_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-team-change-gui-roblox_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/free-robux-no-verification-at-all_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/coin-master-free-spins-and-coins-daily_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/i-got-hacked-in-roblox-albertsstuff_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/how-do-you-get-free-cars-in-roblox-vehicle-simulater_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-printable-roblox-coloring-sheets_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/minecraft-app-free-download_GM479516143.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/coin-master-working-hack_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/how-to-get-free-tiktok-coins_GM835599320.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/roblox-hack-tool-no-human-verification-free-robux_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/how-to-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/free-card-collection-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/dead-by-roblox-bloodpoints-hack_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-roblox-wings_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_off00002c33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C33 23032 bytes
SHA-256: 13d20f654e00043d99de2f2fc2a593961d4912d7bb14f36320788d94f01a07e7
font_01_sfnt_off00006019.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6019 19348 bytes
SHA-256: 8163eefe55d2b716894bab3fbbbe5b67835ea43b9ee71dd429e67fe46c72f214

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