Malicious PDF — malware analysis report

Static analysis result for SHA-256 1972d8000ce9c79d…

MALICIOUS

PDF

34.5 KB Created: 2021-07-02 08:17:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: ca444380b05083a1e6c16895626e1af1 SHA-1: 7890d4491c974030730d71ac3cdcdd4b883efe45 SHA-256: 1972d8000ce9c79d526624b38e6e76aa08c6150aa4bdc826f022f7f69cc20bb9
102 Risk Score

Malware Insights

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

The PDF document contains numerous embedded links and a document body that promises free Robux and game hacks, acting as a lure. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting a link farm designed to attract users searching for cheats or exploits. The ML classifier also strongly flagged this PDF as malicious, supporting the conclusion that it is intended to redirect users to potentially harmful content.

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/how-to-get-free-robux-hack-pc-game-hack
    • http://digilib.stie-yppi.ac.id/repository/coin-master-free-spins-and-free-coins_GM406889139.pdf
    • http://digilib.stie-yppi.ac.id/repository/minecraft-launcher-free_GM479516143.pdf
    • http://digilib.stie-yppi.ac.id/repository/easy-how-to-get-free-robux_GM431946152.pdf
    • http://digilib.stie-yppi.ac.id/repository/free-robux-gift-card-codes-not-used-october-2021_GM431946152.pdf
    • http://digilib.stie-yppi.ac.id/repository/roblox-studio-free-robux_GM431946152.pdf
    • http://digilib.stie-yppi.ac.id/repository/free-robux-promo-codes-2021-june_GM431946152.pdf
    • http://digilib.stie-yppi.ac.id/repository/free-robux-wheel_GM431946152.pdf
    • http://digilib.stie-yppi.ac.id/repository/roblox-how-to-get-free-robux-youtube_GM431946152.pdf
    • http://digilib.stie-yppi.ac.id/repository/roblox-hack-no-human-verification-2021-ios_GM431946152.pdf
    • http://digilib.stie-yppi.ac.id/repository/breaking-point-tips-and-tricks-and-hacks-roblox_GM431946152.pdf
    • http://digilib.stie-yppi.ac.id/repository/how-to-get-free-robux-by-watching-ads-2021_GM431946152.pdf
    • http://digilib.stie-yppi.ac.id/repository/free-spins-for-coin-master-2021_GM406889139.pdf
    • http://digilib.stie-yppi.ac.id/repository/coin-master-mod-free-download_GM406889139.pdf
    • http://digilib.stie-yppi.ac.id/repository/file-droper-roblox-hack_GM431946152.pdf
    • http://digilib.stie-yppi.ac.id/repository/how-do-you-get-free-robux-in-a-game_GM431946152.pdf
    • http://digilib.stie-yppi.ac.id/repository/free-robux-without-human-verification-real_GM431946152.pdf
    • http://digilib.stie-yppi.ac.id/repository/free-roblox-cards-pin-number-2021_GM431946152.pdf
    • http://digilib.stie-yppi.ac.id/repository/coin-master-raid-hack_GM406889139.pdf
    • http://digilib.stie-yppi.ac.id/repository/how-to-get-free-robux-without-human-verification-2021_GM431946152.pdf
    • http://digilib.stie-yppi.ac.id/repository/free-robux-2021-no-human-verification_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000300d.bin
a8a5ead31698d1310e6f37d52572319e561cd276e37610106e2fa2bcf0c1b38b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x300D 22084 bytes
font_01_sfnt_off000060dc.bin
412d8eecccbbf1212800c22a2e3fe0640bf46e296dffa6ab84a1e82f7a87bbab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60DC 19308 bytes

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