Malicious PDF — malware analysis report

Static analysis result for SHA-256 95a46b4340e3aa55…

MALICIOUS

PDF

42.7 KB Created: 2021-06-14 00:18:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 5d8ca9e773fc679f368b0973fd05a582 SHA-1: a40a1633a945b46d01d5116fbb48ae6f147dd3f2 SHA-256: 95a46b4340e3aa554ef28e791d874a628f29c1b2d98aee1bc9b18d64affe63ac
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains numerous embedded links, many of which point to pages offering 'free Robux' or game hacks. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting a link farm designed to attract traffic or distribute malicious content. The ML classifier also flagged this PDF as malicious with high confidence. The presence of a 'download button' lure further supports a malicious intent to trick users into clicking these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/gun-hack-roblox-pastebin-game-hack
    • http://pustaka.pasca.unand.ac.id/repository/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdf
    • http://pustaka.pasca.unand.ac.id/repository/free-robux-generator-no-human-verification-no-download-no-survey_GM431946152.pdf
    • http://pustaka.pasca.unand.ac.id/repository/how-to-hack-on-roblox-and-get-robux_GM431946152.pdf
    • http://pustaka.pasca.unand.ac.id/repository/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdf
    • http://pustaka.pasca.unand.ac.id/repository/free-robux-generator-for-kids_GM431946152.pdf
    • http://pustaka.pasca.unand.ac.id/repository/free-robux-no-bot-check-for-real_GM431946152.pdf
    • http://pustaka.pasca.unand.ac.id/repository/brother-cheating-on-his-roblox-girlfriend_GM431946152.pdf
    • http://pustaka.pasca.unand.ac.id/repository/free-robux-hack-without-verify_GM431946152.pdf
    • http://pustaka.pasca.unand.ac.id/repository/free-robux-no-verification-download_GM431946152.pdf
    • http://pustaka.pasca.unand.ac.id/repository/how-to-get-free-stuff-on-roblox-2021_GM431946152.pdf
    • http://pustaka.pasca.unand.ac.id/repository/new-roblox-free-faces_GM431946152.pdf
    • http://pustaka.pasca.unand.ac.id/repository/advia-roblox-free_GM431946152.pdf
    • http://pustaka.pasca.unand.ac.id/repository/roblox-hack-com_GM431946152.pdf
    • http://pustaka.pasca.unand.ac.id/repository/how-to-get-free-robux-2021-easy_GM431946152.pdf
    • http://pustaka.pasca.unand.ac.id/repository/roblox-jailbreak-cheat-engine_GM431946152.pdf
    • http://pustaka.pasca.unand.ac.id/repository/wall-hack-jailbreak-roblox_GM431946152.pdf
    • http://pustaka.pasca.unand.ac.id/repository/pastebm-free-roblox-accounts_GM431946152.pdf
    • http://pustaka.pasca.unand.ac.id/repository/is-roblox-free-on-nintendo-switch_GM431946152.pdf
    • http://pustaka.pasca.unand.ac.id/repository/what-happens-if-your-hacking-in-roblox_GM431946152.pdf
    • http://pustaka.pasca.unand.ac.id/repository/free-codes-for-boku-no-roblox_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004942.bin
806a0885c112c95ca8beb23bcb11fb4489edcbf6a58eaa1a918571271e8d3c29		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4942 25268 bytes
font_01_sfnt_off00008344.bin
0bc1bb7377bfbbe9e044af6d515b4c39fae5e9de624fb496ba039d26f6150406		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8344 18700 bytes

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