Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d8f2cb1c3a241cd…

MALICIOUS

PDF

35.1 KB Created: 2021-06-27 20:40:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 3012ca39573624067e5301b789d77b16 SHA-1: 13adc857656811e52ccbbaca4519ebf873a59ae6 SHA-256: 7d8f2cb1c3a241cd22f78e1293c17cf7105474e596a717bd739ed596143fac8b
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.co/app/431946152/free-roblox-promo-codes-2021-may-game-hack PDF link annotation
    • http://pustaka.fk.unand.ac.id/repository/free-roblox-account-with-robux-and-password_GM431946152.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/minecraft-skins-free-girl_GM479516143.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/hacking-gui-roblox-pastebin_GM431946152.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/roblox-hack-robux-and-tix-download-free_GM431946152.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/get-minecraft-windows-10-free_GM479516143.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/how-to-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/how-to-win-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/como-ser-hacker-en-roblox-meepcity_GM431946152.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/avast-bloque-les-cheats-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/robux-cheaten-in-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/hacked-google-roblox-pacifico-2_GM431946152.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/hack-roblox-exploit-wearedevs_GM431946152.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/how-can-i-get-a-roblox-hack-gui-to-work_GM431946152.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/roblox-adopt-and-raise-a-baby-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/how-to-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/roblox-mobile-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/minecraft-free-download-laptop_GM479516143.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/how-to-hack-dragon-ball-rage-roblox-2021_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_off00003171.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3171 21740 bytes
SHA-256: ff8785efda6600d2ef727fcb097d833b3434fab3d42705ba44310735e91a67be
font_01_sfnt_off00006150.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6150 20016 bytes
SHA-256: 3f195ff1fe029bf9b753152c97a9ca5fed34e7e5a950d1cf25fb39c7f827a571

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