Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3cee7a4a1cd0585…

MALICIOUS

PDF

34.4 KB Created: 2021-06-28 06:30:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: c215527daffd65f8f94e92992c12b140 SHA-1: bf3bf347ac0c9885911c580120dea69ef0c6eb2e SHA-256: e3cee7a4a1cd0585bfe84229eff046aa81227d509f1494b59d3fbe2e7e261d9d
102 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which are SEO-optimized slugs pointing to purported game cheats and hacks. The primary URL, http://netcdn.co/app/431946152/cheat-roblox-counter-blox-game-hack, suggests a direct download lure. The heuristic firings indicate a malicious PDF designed to host a link farm, likely leading users to malicious downloads or phishing sites.

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.co/app/431946152/cheat-roblox-counter-blox-game-hack PDF link annotation
    • http://pustaka.faterna.unand.ac.id/repository/how-to-get-robux-cards-for-free_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/roblox-transparent-shirt-free-shipping_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/how-to-get-free-robux-2021-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/free-robux-games-that-actually-work_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/how-to-try-roblox-accessoryes-for-free_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/how-to-hack-plus-ultra-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/minecraft-free-download-windows-10_GM479516143.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/roblox-hack-no-human-verification-2021-no-survey_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/fairy-world-roblox-hack-pastebin_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/coin-master-free-spins-and-coins-for-iphone_GM406889139.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/how-to-get-a-free-face-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/play-roblox-fortnite-for-free_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/free-roblox-money-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/hack-prison-life-roblox-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/free-robux-no-human-verification-no-scam_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/how-to-get-free-robux-on-youtube_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/www-roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/free-coin-app_GM406889139.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/minecraft-free-unblocked_GM479516143.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/how-you-hack-roblox_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_off00002fc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FC8 22492 bytes
SHA-256: 22c7452e7fbc403a7027a6f2112eb66eb03b26f7469ffdcdf51bacdfc686bd1a
font_01_sfnt_off00006202.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6202 18896 bytes
SHA-256: 997462d1b16ce7edc8c8ff997f501dc9da5faeef7f7564586f2357cdf0cdf666

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