Malicious PDF — malware analysis report

Static analysis result for SHA-256 a89d607ea9b93ade…

MALICIOUS

PDF

36.4 KB Created: 2021-07-05 02:50:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: d89de77be110b79bc7ce5f02dd8b661c SHA-1: 2452591f46baa56f06f18deb51d7e1ccdf52ba9a SHA-256: a89d607ea9b93adeb4593cae633863d36017a0f3e47d1a66b113b5d07a198bee
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document contains numerous links to external websites, many of which are structured as SEO link farms for game cheats and hacks. The document body explicitly mentions 'How To Get Robux Without Paying' and includes a direct URL to a potential exploit or phishing page. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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.tw/app/431946152/how-to-get-robux-without-paying-game-hack
    • https://seltechutamamandiri.com/ckfinder/userfiles/files/coin-master-free-spins-a2z-help_GM406889139.pdf
    • https://seltechutamamandiri.com/ckfinder/userfiles/files/hack-roblox-games-without-cheat-engine_GM431946152.pdf
    • https://seltechutamamandiri.com/ckfinder/userfiles/files/robux-hack-tools_GM431946152.pdf
    • https://seltechutamamandiri.com/ckfinder/userfiles/files/hack-coin-master-no-survey_GM406889139.pdf
    • https://seltechutamamandiri.com/ckfinder/userfiles/files/free-robux-generator-no-human-verification_GM431946152.pdf
    • https://seltechutamamandiri.com/ckfinder/userfiles/files/roblox-hack-phantom-forces-aimbot_GM431946152.pdf
    • https://seltechutamamandiri.com/ckfinder/userfiles/files/roblox-red-boy-hack_GM431946152.pdf
    • https://seltechutamamandiri.com/ckfinder/userfiles/files/get-free-robux-no-human-verification-or-download_GM431946152.pdf
    • https://seltechutamamandiri.com/ckfinder/userfiles/files/cheat-roblox-vehicle-simulator-money_GM431946152.pdf
    • https://seltechutamamandiri.com/ckfinder/userfiles/files/how-to-get-free-robux-no-human-verification_GM431946152.pdf
    • https://seltechutamamandiri.com/ckfinder/userfiles/files/minecraft-client_GM479516143.pdf
    • https://seltechutamamandiri.com/ckfinder/userfiles/files/hack-coin-master-free_GM406889139.pdf
    • https://seltechutamamandiri.com/ckfinder/userfiles/files/robuxian-tutorials-free-robux-code-generator_GM431946152.pdf
    • https://seltechutamamandiri.com/ckfinder/userfiles/files/coin-master-free-spins-link-2021_GM406889139.pdf
    • https://seltechutamamandiri.com/ckfinder/userfiles/files/how-to-earn-robux-for-free-2021_GM431946152.pdf
    • https://seltechutamamandiri.com/ckfinder/userfiles/files/free-coin-master-spins-blog_GM406889139.pdf
    • https://seltechutamamandiri.com/ckfinder/userfiles/files/how-to-get-free-robux-by-playing-games_GM431946152.pdf
    • https://seltechutamamandiri.com/ckfinder/userfiles/files/how-to-get-your-robux-back-without-hacking-or-buying_GM431946152.pdf
    • https://seltechutamamandiri.com/ckfinder/userfiles/files/can-you-really-hack-coin-master_GM406889139.pdf
    • https://seltechutamamandiri.com/ckfinder/userfiles/files/unendlich-robux-hack_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000345c.bin
61d30344d5ca30ce54011982c19e6d33f96b8edafbbed78ebd737b67b2f4224a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x345C 22900 bytes
font_01_sfnt_off00006791.bin
b958bc447a30ec836123bc526a3b4ecbe8396ef96e60ce6f4ab97b349638648c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6791 19640 bytes

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