Malicious PDF — malware analysis report

Static analysis result for SHA-256 088e6cc8d7642a61…

MALICIOUS

PDF

34.0 KB Created: 2021-07-06 03:54:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 181d35b305a1ee5c17ec9671a64435b2 SHA-1: 7331c963fe99c82904c1fd7f0e5a1618597b4bbe SHA-256: 088e6cc8d7642a61f404cc7061e79c490e506e74a9feda21db22d673ccc29c83
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.tw/app/431946152/roblox36com-free-robux-game-hack PDF link annotation
    • http://muslib.unmus.ac.id/repository/how-to-be-a-hacker-in-roblox-2021_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/coin-master-cheats-2021_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-cheat-guide_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/coinmasterfreespinlink_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/tiktok-free-games_GM835599320.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/minecraft-free-download_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-minecraft-alts_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/download-roblox-for-free-unlockable-game_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/apps-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-hack-without-root_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/how-can-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-get-free-stuff-in-the-roblox-catalog-2021_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-dominus-roblox_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-download-roblox-cheat-engine_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-daily-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/easy-robux-hack-com_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-store-free_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-script-injector-free-download_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/lazyblocks-com-free-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-spin-links-coin-master-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_off00002f17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F17 21788 bytes
SHA-256: 2871103bbad38c8c634753aa85f2425ed6193233146554fb8395fd3476884bcf
font_01_sfnt_off00005eeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EEB 19392 bytes
SHA-256: f5d8fb1e1227d04f94fc2588cf3bb8579c3297dc080a6331d916c9c738f57d9e

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