Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a5bdbe6e72b4e8f…

MALICIOUS

PDF

47.5 KB Created: 2021-05-19 07:32:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: e068e03380f623e01b564ffb7ad56559 SHA-1: ba4a5a417cf429ef707236da562a1a3a786c98e3 SHA-256: 6a5bdbe6e72b4e8f7310dd6ca8f7a9ad685c423b6a5a96e3a947afe1240a3637
142 Risk Score

Malware Insights

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

This PDF document contains numerous links to external websites, many of which appear to be part of a link farm promoting game cheats and hacks. The document also contains a lure instructing the user to copy and paste content into a command-line context, suggesting an attempt to trick the user into executing malicious commands. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8715

Heuristics 5

  • 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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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/479516143/minecraft-free-school-game-hack
    • http://www.readandenjoy.ae/userfiles/files/how-to-get-free-robux-without-offers_GM431946152.pdf
    • http://www.readandenjoy.ae/userfiles/files/collect-free-spins-coin-master_GM406889139.pdf
    • http://www.readandenjoy.ae/userfiles/files/free-minecraft-skins-xbox-one_GM479516143.pdf
    • http://www.readandenjoy.ae/userfiles/files/coin-master-hack-mobile_GM406889139.pdf
    • http://www.readandenjoy.ae/userfiles/files/hey-google-how-do-you-get-free-robux_GM431946152.pdf
    • http://www.readandenjoy.ae/userfiles/files/minecraft-pe-hack-client_GM479516143.pdf
    • http://www.readandenjoy.ae/userfiles/files/how-do-you-get-roblox-for-free_GM431946152.pdf
    • http://www.readandenjoy.ae/userfiles/files/free-spins-for-coin-master-game_GM406889139.pdf
    • http://www.readandenjoy.ae/userfiles/files/moonactive-coin-master_GM406889139.pdf
    • http://www.readandenjoy.ae/userfiles/files/how-many-villages-are-in-coin-master_GM406889139.pdf
    • http://www.readandenjoy.ae/userfiles/files/how-to-get-free-coins-in-coin-master_GM406889139.pdf
    • http://www.readandenjoy.ae/userfiles/files/free-daily-spins-coin-master_GM406889139.pdf
    • http://www.readandenjoy.ae/userfiles/files/free-spins-coin-master-2021-glitch_GM406889139.pdf
    • http://www.readandenjoy.ae/userfiles/files/coin-master-400-spin-link-today_GM406889139.pdf
    • http://www.readandenjoy.ae/userfiles/files/real-roblox_GM431946152.pdf
    • http://www.readandenjoy.ae/userfiles/files/free-modded-minecraft-server-hosting_GM479516143.pdf
    • http://www.readandenjoy.ae/userfiles/files/coin-master-hack-tool-download_GM406889139.pdf
    • http://www.readandenjoy.ae/userfiles/files/master-free-spins-and-coins_GM406889139.pdf
    • http://www.readandenjoy.ae/userfiles/files/free-coin-master-hacks-no-verification-or-survey_GM406889139.pdf
    • http://www.readandenjoy.ae/userfiles/files/minecraft-free-download-android_GM479516143.pdf
    • http://www.freenom.comHey
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a5c.bin
62dcc98c0d969435a4c6f1aa489a633cca3d79e4274053b705a7d5d5c83f4095		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A5C 25356 bytes
font_01_sfnt_off00008387.bin
f1a29adcea636583330be8db4f6466410de551ac48576b9e1aa5c34e2d665a1f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8387 3020 bytes
font_02_sfnt_off00008ddb.bin
4555740682277f0055d57b15bd0ba953e5b51415ea3d21c93db391eace072d4f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8DDB 2816 bytes
font_03_sfnt_off000097eb.bin
3306dbe29cd5a9252a7c23216fa618f4152d1ef882dd12fcaa7c7369e283e77f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x97EB 17952 bytes

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