Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d5bedcd6cd2d339…

MALICIOUS

PDF

33.4 KB Created: 2021-06-25 14:13:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: ba0c6dc428e9b3126742f2ffcbfd9142 SHA-1: d36c8473fa5d056451c944bedeff3a0be1c1f311 SHA-256: 8d5bedcd6cd2d339b5510aa612d6f022aa7adb450048b4f2ea2f61ee43fb1302
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external websites, many of which are presented as resources for game hacks and cheats, particularly for Roblox. The presence of a "download button" heuristic and the ML classifier's high confidence score indicate a malicious intent to direct users to potentially harmful content. The document's structure suggests it is part of a link farm designed to attract users searching for cheats, likely leading to malware downloads or phishing attempts.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/flowify-hacks-roblox-game-hack
    • http://digilib.pustaka.unand.ac.id/repository/free-noclip-roblox-hack_GM431946152.pdf
    • http://digilib.pustaka.unand.ac.id/repository/free-robux-no-password-or-phone-number-needed_GM431946152.pdf
    • http://digilib.pustaka.unand.ac.id/repository/how-to-change-your-roblox-username-for-free-no-hack_GM431946152.pdf
    • http://digilib.pustaka.unand.ac.id/repository/free-robux-websites-that-actually-work-2021_GM431946152.pdf
    • http://digilib.pustaka.unand.ac.id/repository/free-tiktok-followers-no-survey_GM835599320.pdf
    • http://digilib.pustaka.unand.ac.id/repository/descargar-roblox-hackeado-2021-ultima-version_GM431946152.pdf
    • http://digilib.pustaka.unand.ac.id/repository/roblox-phantom-forces-hack-2021_GM431946152.pdf
    • http://digilib.pustaka.unand.ac.id/repository/cheat-engine-roblox-tycoon_GM431946152.pdf
    • http://digilib.pustaka.unand.ac.id/repository/free-robux-group_GM431946152.pdf
    • http://digilib.pustaka.unand.ac.id/repository/free-roblox-accounts-with-robux-that-work-not-banned_GM431946152.pdf
    • http://digilib.pustaka.unand.ac.id/repository/free-daily-spins-coin-master_GM406889139.pdf
    • http://digilib.pustaka.unand.ac.id/repository/robux-poscod-hacks_GM431946152.pdf
    • http://digilib.pustaka.unand.ac.id/repository/roblox-cheats-for-robux-and-tix-2021_GM431946152.pdf
    • http://digilib.pustaka.unand.ac.id/repository/moon-tycoon-roblox-gives-free-robux_GM431946152.pdf
    • http://digilib.pustaka.unand.ac.id/repository/descargar-roblox-hack-robux-infinito_GM431946152.pdf
    • http://digilib.pustaka.unand.ac.id/repository/how-to-hack-to-get-robux-2021_GM431946152.pdf
    • http://digilib.pustaka.unand.ac.id/repository/how-to-get-free-stuff-on-roblox-xbox-one_GM431946152.pdf
    • http://digilib.pustaka.unand.ac.id/repository/how-to-get-free-robux-on-roblox-real_GM431946152.pdf
    • http://digilib.pustaka.unand.ac.id/repository/free-ways-to-get-robux_GM431946152.pdf
    • http://digilib.pustaka.unand.ac.id/repository/how-to-get-a-free-vip-server-on-roblox-2021_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002c07.bin
f433597b1651b619bf9c08ccd0cd82f4290fca90b3544eb14b442f199aaba4cd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C07 22260 bytes
font_01_sfnt_off00005d47.bin
9c3e5fb342446d13b08d47d2dfc436ece75b1108c8aecf9b013552f186fb7479		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D47 19284 bytes

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