Malicious PDF — malware analysis report

Static analysis result for SHA-256 452e72b421aeceef…

MALICIOUS

PDF

33.6 KB Created: 2021-07-05 22:55:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: e3847134abba45b7bfd93507d7c8548e SHA-1: 2e47f90ac949f3be18cccf1ae8c1a36d9e9d401d SHA-256: 452e72b421aeceef37887dd173f5f6f1343ade7b4aee86575b83dd8b06ffe02e
102 Risk Score

Malware Insights

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

The PDF document contains numerous embedded links, many of which are structured as a link farm pointing to game-related hacks and cheats. The primary URL, http://netcdn.tw/app/479516143/free-minecraft-capes-no-mods-game-hack, suggests a lure for users seeking in-game advantages. The ML classifier strongly indicated maliciousness, and the presence of a "download button" heuristic further supports the intent to trick users into downloading 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.tw/app/479516143/free-minecraft-capes-no-mods-game-hack
    • http://digilibfisip.unla.ac.id/repository/roblox-hack-scripts-robux_GM431946152.pdf
    • http://digilibfisip.unla.ac.id/repository/how-to-send-free-spins-on-coin-master_GM406889139.pdf
    • http://digilibfisip.unla.ac.id/repository/roblox-cheat-engine-check-cast-v3_GM431946152.pdf
    • http://digilibfisip.unla.ac.id/repository/se-puede-hackear-nighthawk-imperoum-roblox_GM431946152.pdf
    • http://digilibfisip.unla.ac.id/repository/roblox-coding-classes-free_GM431946152.pdf
    • http://digilibfisip.unla.ac.id/repository/cch-ly-robux-free-minhmama_GM431946152.pdf
    • http://digilibfisip.unla.ac.id/repository/cr7-hack-roblox-2021_GM431946152.pdf
    • http://digilibfisip.unla.ac.id/repository/roblox-hack-29-05-17_GM431946152.pdf
    • http://digilibfisip.unla.ac.id/repository/how-to-get-free-clothes-no-robux-of-freinds_GM431946152.pdf
    • http://digilibfisip.unla.ac.id/repository/how-to-get-free-robux-without-downloading-anything_GM431946152.pdf
    • http://digilibfisip.unla.ac.id/repository/games-like-bloxbutg-in-roblox-for-free_GM431946152.pdf
    • http://digilibfisip.unla.ac.id/repository/free-check-it-roblox_GM431946152.pdf
    • http://digilibfisip.unla.ac.id/repository/how-to-report-a-hacker-that-hacking-you-roblox-account_GM431946152.pdf
    • http://digilibfisip.unla.ac.id/repository/free-robux-2021-easy-not-working_GM431946152.pdf
    • http://digilibfisip.unla.ac.id/repository/roblox-hack-tool-no-download-no-survey_GM431946152.pdf
    • http://digilibfisip.unla.ac.id/repository/counter-blox-roblox-offensive-case-hack_GM431946152.pdf
    • http://digilibfisip.unla.ac.id/repository/free-robux-no-downloading-apps_GM431946152.pdf
    • http://digilibfisip.unla.ac.id/repository/robux-free-hack-no-human-verification-2021_GM431946152.pdf
    • http://digilibfisip.unla.ac.id/repository/red-boy-how-to-get-free-robux_GM431946152.pdf
    • http://digilibfisip.unla.ac.id/repository/roblox-free-dominus-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_off00002f18.bin
f0471740a53335e8578e8f9b94c105f190ec75461363e6e8637d0a3aeffeed46		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2F18 22180 bytes
font_01_sfnt_off0000603f.bin
d7387eba205e2dc7011e0cc9c38cfc2261d39171642b1e4f0220b34e91761172		 pdf-font-stream PDF embedded font (sfnt) at offset 0x603F 18348 bytes

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