Malicious PDF — malware analysis report

Static analysis result for SHA-256 907e0a4dde30f798…

MALICIOUS

PDF

41.4 KB Created: 2021-05-19 23:05:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 4a4dbf5f711c8baf1d03b3e0118c018b SHA-1: f670f2251ec8c453c38b29631dae70da53a6d675 SHA-256: 907e0a4dde30f798936cd231c3de83dfc9aae825897397bb8aaa3650638be78f
82 Risk Score

Malware Insights

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

The PDF document contains a fake CAPTCHA lure, designed to trick the user into interacting with the document. It also embeds external URIs, such as 'https://netcdn.xyz/app/1094591345/pokemon-go-free-game-hack', which likely lead to the download of a second-stage payload. The ML classifier strongly supports the malicious nature of this file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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 https://netcdn.xyz/app/1094591345/pokemon-go-free-game-hack
    • https://e-learning.man3kabcirebon.sch.id/__statics/gudangsoal/files/coin-master-free-coins-and-spins-link_GM406889139.pdf
    • https://e-learning.man3kabcirebon.sch.id/__statics/gudangsoal/files/roblox-free-clothes-girl_GM431946152.pdf
    • https://e-learning.man3kabcirebon.sch.id/__statics/gudangsoal/files/master-coin-hack-game_GM406889139.pdf
    • https://e-learning.man3kabcirebon.sch.id/__statics/gudangsoal/files/roblox-free-clothes-codes_GM431946152.pdf
    • https://e-learning.man3kabcirebon.sch.id/__statics/gudangsoal/files/get-robux-for-free-2021_GM431946152.pdf
    • https://e-learning.man3kabcirebon.sch.id/__statics/gudangsoal/files/coin-master-2021_GM406889139.pdf
    • https://e-learning.man3kabcirebon.sch.id/__statics/gudangsoal/files/roblox-rewards_GM431946152.pdf
    • https://e-learning.man3kabcirebon.sch.id/__statics/gudangsoal/files/free-coin-master-gold-cards_GM406889139.pdf
    • https://e-learning.man3kabcirebon.sch.id/__statics/gudangsoal/files/roblox-games-that-give-you-free-robux_GM431946152.pdf
    • https://e-learning.man3kabcirebon.sch.id/__statics/gudangsoal/files/instant-robux_GM431946152.pdf
    • https://e-learning.man3kabcirebon.sch.id/__statics/gudangsoal/files/no-robux_GM431946152.pdf
    • https://e-learning.man3kabcirebon.sch.id/__statics/gudangsoal/files/coin-master-hack-pc-cheat-engine_GM406889139.pdf
    • https://e-learning.man3kabcirebon.sch.id/__statics/gudangsoal/files/play-full-version-of-minecraft-for-free-no-download_GM479516143.pdf
    • https://e-learning.man3kabcirebon.sch.id/__statics/gudangsoal/files/how-do-you-get-free-robux_GM431946152.pdf
    • https://e-learning.man3kabcirebon.sch.id/__statics/gudangsoal/files/coin-master-unlimited-spin-and-coin-hack_GM406889139.pdf
    • https://e-learning.man3kabcirebon.sch.id/__statics/gudangsoal/files/coin-master-free-2021-spin-link-today_GM406889139.pdf
    • https://e-learning.man3kabcirebon.sch.id/__statics/gudangsoal/files/hack-para-coin-master-sin-verification_GM406889139.pdf
    • https://e-learning.man3kabcirebon.sch.id/__statics/gudangsoal/files/freespinandcoinblogspot-com-2021-11-coinmasterfreespins_GM406889139.pdf
    • https://e-learning.man3kabcirebon.sch.id/__statics/gudangsoal/files/robux-hack-no-verification_GM431946152.pdf
    • https://e-learning.man3kabcirebon.sch.id/__statics/gudangsoal/files/roblox-hack-generator_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004ac4.bin
0ae8039f2e4a0bbf776678cd9a9173bdf3c88c2054e00f60ddc24678207b971d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4AC4 23992 bytes
font_01_sfnt_off00008105.bin
a557d681b6930e6b67474f1caccc94bc7d6b750dd896a5f6664ca8e84191490a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8105 17844 bytes

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