Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e086988adbab0e8…

MALICIOUS

PDF

35.4 KB Created: 2021-06-28 21:39:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 3e3bfb2889dd3e90ac2d74263ebb4127 SHA-1: 584ac395e5ac182f459bef0c7294cac2e1b88c08 SHA-256: 0e086988adbab0e8908ca4aa83032447109855353ced8caaf4f125294e9e813b
102 Risk Score

Malware Insights

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

The PDF document contains numerous links and a call-to-action phrase, aiming to trick users into downloading a file by promising free in-game currency. The ML classifier strongly indicated maliciousness, and the PDF structure suggests a link farm designed to host malicious content. The primary URL http://netcdn.co/app/431946152/hey-google-can-you-give-me-free-robux-game-hack is likely the payload delivery point.

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/hey-google-can-you-give-me-free-robux-game-hack
    • http://digilibfisip.uwks.ac.id/repository/free-robux-generator-no-human-verification-2021_GM431946152.pdf
    • http://digilibfisip.uwks.ac.id/repository/free-robux-hack-that-easy-and-o_GM431946152.pdf
    • http://digilibfisip.uwks.ac.id/repository/free-robux-no-verification-2021-android_GM431946152.pdf
    • http://digilibfisip.uwks.ac.id/repository/roblox-free-robux-tampermonkey_GM431946152.pdf
    • http://digilibfisip.uwks.ac.id/repository/roblox-robux-hack-no-survey-no-download-no-human-verication_GM431946152.pdf
    • http://digilibfisip.uwks.ac.id/repository/roblox-hack-mod-unlimited-robux_GM431946152.pdf
    • http://digilibfisip.uwks.ac.id/repository/free-robux-installer_GM431946152.pdf
    • http://digilibfisip.uwks.ac.id/repository/roblox-hack-site-roblox-unlimited_GM431946152.pdf
    • http://digilibfisip.uwks.ac.id/repository/cheat-codes-for-roblox-on-phone_GM431946152.pdf
    • http://digilibfisip.uwks.ac.id/repository/promo-code-list-to-get-free-robux_GM431946152.pdf
    • http://digilibfisip.uwks.ac.id/repository/how-to-get-300-robux-for-free-on-roblox_GM431946152.pdf
    • http://digilibfisip.uwks.ac.id/repository/free-minecraft-games-for-kids_GM479516143.pdf
    • http://digilibfisip.uwks.ac.id/repository/how-to-get-free-robux-in-one-day_GM431946152.pdf
    • http://digilibfisip.uwks.ac.id/repository/how-to-hack-eviction-notice-roblox_GM431946152.pdf
    • http://digilibfisip.uwks.ac.id/repository/adonis-roblox-hack_GM431946152.pdf
    • http://digilibfisip.uwks.ac.id/repository/top-free-roblox-items_GM431946152.pdf
    • http://digilibfisip.uwks.ac.id/repository/free-promo-codes-for-robux_GM431946152.pdf
    • http://digilibfisip.uwks.ac.id/repository/robux-and-tix-hack-2021_GM431946152.pdf
    • http://digilibfisip.uwks.ac.id/repository/how-to-get-the-snowman-package-free-in-roblox_GM431946152.pdf
    • http://digilibfisip.uwks.ac.id/repository/does-roblox-ip-ban-for-hacking_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000031c3.bin
5d3489cdee6d0e68cc8cdbf13e158ff0ff385df3110277d22fb222d9efe40dce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x31C3 22556 bytes
font_01_sfnt_off0000641e.bin
cae8c7c91969bddc0af9795dfd9270e4fe60ee9053c9d032a0bd8f6a8c1b7240		 pdf-font-stream PDF embedded font (sfnt) at offset 0x641E 19564 bytes

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