Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d8bbfb6e5b93baf…

MALICIOUS

PDF

43.6 KB Created: 2021-06-13 23:51:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: db5b2ada479fe9902c444986776a6da9 SHA-1: b497b4b6bfd3cf5b5eb10c69a2659a106bdee6fe SHA-256: 6d8bbfb6e5b93bafb476004d6dc43bb638b3f9fae0fe5523d823fe3ef73f93a0
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 0.9969

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/azure-mines-roblox-cheats-game-hack PDF link annotation
    • http://perpustakaan.stikim.ac.id/slims/repository/free-coins-coin-master-haktuts_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/how-to-get-free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/pubg-uc-download_GM1330123889.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/roblox-cheats-2021-may_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/roblox-hack-kick-gui_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/500-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/free-robux-safe_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/free-robux-app-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/minecraft-mod-menu_GM479516143.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/free-robux-without-downloading-anything-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/roblox-password-generator-free-download_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/minecraft-windows-free_GM479516143.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/how-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/strucid-aimbot_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/apk-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/coin-master-free-spins-and-coins-link-haktuts_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/coin-master-free-link-today_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/coin-master-coins-free_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/free-robux-no-hack-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/google-moon-active_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
stream_003_off00004a4b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A4B 26900 bytes
SHA-256: 6fc29f9e4abc827a6d2d5b0f91e4443384777350fcda551c3031febbdbb27a94
font_01_sfnt_off00008693.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8693 18820 bytes
SHA-256: 95ec1343f135bdb17bc9191a68b97d28140febf8d872ae580862577201909316

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