Malicious PDF — malware analysis report

Static analysis result for SHA-256 45479a28317e98c8…

MALICIOUS

PDF

35.2 KB Created: 2021-07-03 18:59:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 9c626e5592593eb04d8e834d3ec20498 SHA-1: 35206e47c1cbc6c30f1dede332df8589e9bcb484 SHA-256: 45479a28317e98c87394ed22805b4e2fa388ec039b35d63f9fca84e79d90cac1
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/how-to-get-1-million-robux-for-free-2021-game-hack PDF link annotation
    • http://perpustakaan.pa-dompu.go.id/repository/godzilla-roblox-free-items_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/free-spin-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/hacks-roblox-the-streets_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/robux-hack-whith-easy-human-verifacation_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id//repository/descargar-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/como-hackear-los-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/ways-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/totally-free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id//repository/free-unlimited-coin-master-online-tool_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id//repository/free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/anime-cross-2-hack-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/roblox-free-terminated-accounts-passwords-and-logins_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/roblox-get-free-plus-on-meep-city-working-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id//repository/how-to-get-minecraft-for-free-on-ps4-2021_GM479516143.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/tiktok-free-app_GM835599320.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/comment-hacker-le-jeux-roblox-sur-buku-no-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/roblox-hacks-for-ipad_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/roblox-hack-robux-download-tool_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id//repository/free-ways-to-get-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/how-to-hack-into-someones-roblox_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_off000030d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30D4 22316 bytes
SHA-256: 922ee13cf251ac83ad84a26697ce19c42ec6b4a761ecff6ea9b4476a55e50a09
font_01_sfnt_off00006274.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6274 19776 bytes
SHA-256: 3729c149e68d86db1c65f615c1f40252ecd2b73d2d971cd5d72cafcdeb2ff644

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