Malicious PDF — malware analysis report

Static analysis result for SHA-256 89eeff6cce4538ba…

MALICIOUS

PDF

47.9 KB Created: 2021-06-09 13:06:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: b9de703a0d5e68fd7ca2d40543a8f6da SHA-1: e8855cc63204ba93b7fd3012affdb2ff753a8c11 SHA-256: 89eeff6cce4538badc284b5eb120c392c160f5f7f86177a6228a0d6045ea4f60
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs and a document body that advertises hacks and cheats for popular games like Roblox and Minecraft. The heuristic firings indicate a high likelihood of malicious intent, specifically a link farm designed to attract users with promises of free in-game currency or items. The presence of multiple external URIs suggests the document is intended to redirect users to potentially harmful websites or download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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 https://netcdn.tw/app/431946152/youtube-free-robux-hack-2021-hurry-before-roblox-patches-it-game-hack
    • http://agrupamentoescolas-alfredo-da-silva.com/images/minecraft-pe-hack-client-ios_GM479516143.pdf
    • http://agrupamentoescolas-alfredo-da-silva.com/images/new-free-spins-coin-master_GM406889139.pdf
    • http://agrupamentoescolas-alfredo-da-silva.com/images/free-tiktok-accounts_GM835599320.pdf
    • http://agrupamentoescolas-alfredo-da-silva.com/images/free-robux-without-offers_GM431946152.pdf
    • http://agrupamentoescolas-alfredo-da-silva.com/images/free-robux-hack-no-verification_GM431946152.pdf
    • http://agrupamentoescolas-alfredo-da-silva.com/images/roblox-place-rewards_GM431946152.pdf
    • http://agrupamentoescolas-alfredo-da-silva.com/images/how-to-get-a-cape-in-minecraft-for-free_GM479516143.pdf
    • http://agrupamentoescolas-alfredo-da-silva.com/images/how-to-hack-roblox-to-get-robux_GM431946152.pdf
    • http://agrupamentoescolas-alfredo-da-silva.com/images/free-robux-omg_GM431946152.pdf
    • http://agrupamentoescolas-alfredo-da-silva.com/images/hey-google-how-do-you-get-free-robux_GM431946152.pdf
    • http://agrupamentoescolas-alfredo-da-silva.com/images/how-to-hack-roblox-accounts-for-robux_GM431946152.pdf
    • http://agrupamentoescolas-alfredo-da-silva.com/images/how-to-download-minecraft-windows-10-edition-for-free_GM479516143.pdf
    • http://agrupamentoescolas-alfredo-da-silva.com/images/public-enemy-sun-prairie-coin-master-free-spins_GM406889139.pdf
    • http://agrupamentoescolas-alfredo-da-silva.com/images/how-to-get-free-robux-easy-2021_GM431946152.pdf
    • http://agrupamentoescolas-alfredo-da-silva.com/images/how-to-hack-a-roblox-account-easy_GM431946152.pdf
    • http://agrupamentoescolas-alfredo-da-silva.com/images/who-to-get-free-robux_GM431946152.pdf
    • http://agrupamentoescolas-alfredo-da-silva.com/images/how-to-get-free-coins-in-coin-master_GM406889139.pdf
    • http://agrupamentoescolas-alfredo-da-silva.com/images/minecraft-free-download-unblocked_GM479516143.pdf
    • http://agrupamentoescolas-alfredo-da-silva.com/images/freegames911com-coinmastertipsandcheats2021freecoinsandspins_GM406889139.pdf
    • http://agrupamentoescolas-alfredo-da-silva.com/images/minecraft-sign-up-free_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000555f.bin
7a879c037e1bbb24382d71413521c0f714116476fd613edfad3e587ef2caa570		 pdf-font-stream PDF embedded font (sfnt) at offset 0x555F 27884 bytes
font_01_sfnt_off000094bc.bin
2e0d0a87485a42a8877a33cfeb9f51dc8963c7ab4ec9adb424fa7233ca475564		 pdf-font-stream PDF embedded font (sfnt) at offset 0x94BC 19656 bytes

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