Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c7286c445607d68…

MALICIOUS

PDF

47.1 KB Created: 2021-06-09 04:15:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 0f7351ee4f70b6fbe6703cd35564ae9b SHA-1: 17a8b4906c3738fe22a8f1c91128536fab658cd5 SHA-256: 8c7286c445607d680058dc69893fac91a64aae30c533a57d2ef4df2e622a0bc6
82 Risk Score

Malware Insights

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

The PDF document contains a fake CAPTCHA or human verification prompt, designed to trick the user into downloading a file. It also includes numerous embedded URLs pointing to potentially malicious content, such as game hacks and cheats. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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.tw/app/431946152/no-gravity-roblox-cheat-engine-game-hack PDF link annotation
    • http://firesafetyservices.biz/images/minecraft-windows-10-free-code_GM479516143.pdfIn PDF document text
    • http://firesafetyservices.biz/images/coin-master-hack-2021-android-apk_GM406889139.pdfIn PDF document text
    • http://firesafetyservices.biz/images/free-robux-gen_GM431946152.pdfIn PDF document text
    • http://firesafetyservices.biz/images/hackear-juego-coin-master_GM406889139.pdfIn PDF document text
    • http://firesafetyservices.biz/images/robloxheroxyz-free-robux_GM431946152.pdfIn PDF document text
    • http://firesafetyservices.biz/images/free-spins-and-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://firesafetyservices.biz/images/robux-cheat_GM431946152.pdfIn PDF document text
    • http://firesafetyservices.biz/images/free-spin-link-of-coin-master_GM406889139.pdfIn PDF document text
    • http://firesafetyservices.biz/images/cm-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://firesafetyservices.biz/images/how-to-win-attack-madness-in-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://firesafetyservices.biz/images/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • http://firesafetyservices.biz/images/how-to-get-minecraft-pe-for-free_GM479516143.pdfIn PDF document text
    • http://firesafetyservices.biz/images/free-robux-no-human-verification-generator_GM431946152.pdfIn PDF document text
    • http://firesafetyservices.biz/images/rblx-city-free-robux_GM431946152.pdfIn PDF document text
    • http://firesafetyservices.biz/images/free-coin-master-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://firesafetyservices.biz/images/wurst-client_GM479516143.pdfIn PDF document text
    • http://firesafetyservices.biz/images/free-minecraft-maps_GM479516143.pdfIn PDF document text
    • http://firesafetyservices.biz/images/codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://firesafetyservices.biz/images/coin-master-hack-activegamer_GM406889139.pdfIn PDF document text
    • http://firesafetyservices.biz/images/robuxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000051b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x51B8 24152 bytes
SHA-256: a44459cba4a70a520c4a01a8f27076a4b00bec1c6fa8c93da1fc41c76c7f8ecd
font_01_sfnt_off0000892a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x892A 2824 bytes
SHA-256: 94c1b019735d7e491765340abe50b2897410e2ec65ecf141c08bd9f2220897c4
font_02_sfnt_off000092d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92D8 18984 bytes
SHA-256: 181f91f48dd3b8432bd79a141cc4ddd9f9adad3d2425cc21f41db03316d91579

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