Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c2b5ed835bb0f2f…

MALICIOUS

PDF

42.5 KB Created: 2021-05-11 03:11:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 357d4c76881693ba0b63c6271d23f884 SHA-1: b2703e96bc51cbdd37a7a7fa055284f469b5e4f8 SHA-256: 6c2b5ed835bb0f2f8897e93cac710ec0d22dd3a7f12df1fe3c226e350bc5f3c6
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 0.9971

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 https://netcdn.xyz/app/431946152/how-to-hack-roblox-game-hack PDF link annotation
    • http://perpustakaan.urindo.ac.id/repository/minecraft-realms-free-codes_GM479516143.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/is-there-any-tricks-or-working-hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/free-spin-app-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/rbxoffers-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/abd-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/get-free-coin-master-coins_GM406889139.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/how-do-you-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/hack-version-of-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/coin-master-daily-free-spins-link-today-blog_GM406889139.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/play-minecraft-free-online-no-download_GM479516143.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/minecraft-texture-packs-free-download_GM479516143.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/coin-master-32-mod-hack-apk-download_GM406889139.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/roblox-girl_GM431946152.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/coin-master-heaven-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/coin-master-villages_GM406889139.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/coin-master-hack-2021-without-verification_GM406889139.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/free-robux-net_GM431946152.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/roblox-group-free-robux_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_off00004a68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A68 25068 bytes
SHA-256: 0e9705f5a87c55877cb8b92bd79ac673935642167bb2ece3e8e5e9dee00f9cb8
font_01_sfnt_off00008345.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8345 18344 bytes
SHA-256: 73440050ee62d9c8dc97d7cf0d13859b5ca63a66159f36279ab18a86d0bf293f

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