Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc2fd748cfb49732…

MALICIOUS

PDF

48.4 KB Created: 2021-06-03 19:57:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 857410cf11b15b6e28e1e42b29a69f99 SHA-1: d1df76169527cf24654f5824bbdb69fb1ac3a058 SHA-256: dc2fd748cfb497320ab6dcba8613ed4d95edc79f5ab6c4b8c380b813acbd29bc
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document displays a fake CAPTCHA or human verification prompt, a common social engineering tactic to trick users into interacting with malicious content. It also contains an embedded URI pointing to a URL associated with 'free Robux game hack', suggesting a lure for potentially unwanted software or further malware. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9871

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.online/app/431946152/how-can-u-get-free-robux-game-hack
    • https://elearning.man1samarinda.sch.id/__statics/gudangsoal/files/can-you-get-free-robux-on-roblox_GM431946152.pdf
    • https://elearning.man1samarinda.sch.id/__statics/gudangsoal/files/if-you-delete-minecraft-can-you-redownload-it-for-free_GM479516143.pdf
    • https://elearning.man1samarinda.sch.id/__statics/gudangsoal/files/coin-master-codes_GM406889139.pdf
    • https://elearning.man1samarinda.sch.id/__statics/gudangsoal/files/free-robux-microsoft_GM431946152.pdf
    • https://elearning.man1samarinda.sch.id/__statics/gudangsoal/files/free-robux-apk_GM431946152.pdf
    • https://elearning.man1samarinda.sch.id/__statics/gudangsoal/files/roblox-games-with-free-vip-servers_GM431946152.pdf
    • https://elearning.man1samarinda.sch.id/__statics/gudangsoal/files/roblox-jailbreak-money-hack-pastebin_GM431946152.pdf
    • https://elearning.man1samarinda.sch.id/__statics/gudangsoal/files/wurst-client-18-9_GM479516143.pdf
    • https://elearning.man1samarinda.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-haktuts_GM406889139.pdf
    • https://elearning.man1samarinda.sch.id/__statics/gudangsoal/files/easy-robux-hack_GM431946152.pdf
    • https://elearning.man1samarinda.sch.id/__statics/gudangsoal/files/roblox-password-hacker_GM431946152.pdf
    • https://elearning.man1samarinda.sch.id/__statics/gudangsoal/files/roblox-shirt-template-free_GM431946152.pdf
    • https://elearning.man1samarinda.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-for-free-2021_GM479516143.pdf
    • https://elearning.man1samarinda.sch.id/__statics/gudangsoal/files/give-me-robux_GM431946152.pdf
    • https://elearning.man1samarinda.sch.id/__statics/gudangsoal/files/how-to-hack-in-arsenal_GM431946152.pdf
    • https://elearning.man1samarinda.sch.id/__statics/gudangsoal/files/free-robux-generator-com-roblox-hack_GM431946152.pdf
    • https://elearning.man1samarinda.sch.id/__statics/gudangsoal/files/games-that-give-you-free-robux_GM431946152.pdf
    • https://elearning.man1samarinda.sch.id/__statics/gudangsoal/files/coin-master-free-spins-no-verification_GM406889139.pdf
    • https://elearning.man1samarinda.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins-link-2021_GM406889139.pdf
    • https://elearning.man1samarinda.sch.id/__statics/gudangsoal/files/coin-master-mod-apk_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000534d.bin
294cbe1f7ffb954fba8dc4f32862a6f368491f08beff9d63b0bfd9d279507b33		 pdf-font-stream PDF embedded font (sfnt) at offset 0x534D 30580 bytes
font_01_sfnt_off000099a9.bin
6d387a6157482ae5d4424ea2a1b018d5f079fe6dbc45eeb2149446a5bd008250		 pdf-font-stream PDF embedded font (sfnt) at offset 0x99A9 18696 bytes

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