Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e957854ca2e34c8…

MALICIOUS

PDF

43.5 KB Created: 2021-05-17 06:30:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: ddd637fc8cbb3031531359ec514c649f SHA-1: 195d9da08da12c66e4692d4cc5b0cc0709104864 SHA-256: 5e957854ca2e34c851efc9abe9bedb9a289402480e68c4b1b5a3518c8ae851bb
82 Risk Score

Malware Insights

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

The PDF document contains a fake CAPTCHA lure, designed to trick users into interacting with it. It also embeds multiple external URLs, one of which is directly linked to a potential exploit or download page. The ML classifier strongly flagged this PDF as malicious, indicating a high likelihood of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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.xyz/app/431946152/roblox-adopt-me-hack-game-hack
    • https://elearning.mtsn2mdn.sch.id/__statics/gudangsoal/files/free-robux-no-survey-or-human-verification_GM431946152.pdf
    • https://elearning.mtsn2mdn.sch.id/__statics/gudangsoal/files/roblox-hack-me_GM431946152.pdf
    • https://elearning.mtsn2mdn.sch.id/__statics/gudangsoal/files/coin-master-free-spins-2021_GM406889139.pdf
    • https://elearning.mtsn2mdn.sch.id/__statics/gudangsoal/files/roblox-robux-hack-generator_GM431946152.pdf
    • https://elearning.mtsn2mdn.sch.id/__statics/gudangsoal/files/earn-free-spins-in-coin-master_GM406889139.pdf
    • https://elearning.mtsn2mdn.sch.id/__statics/gudangsoal/files/coin-master-hack-ios-10_GM406889139.pdf
    • https://elearning.mtsn2mdn.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-for-free-on-android-device_GM479516143.pdf
    • https://elearning.mtsn2mdn.sch.id/__statics/gudangsoal/files/inappropriate-roblox-games-2021_GM431946152.pdf
    • https://elearning.mtsn2mdn.sch.id/__statics/gudangsoal/files/free-robux-codes-generator-no-verification_GM431946152.pdf
    • https://elearning.mtsn2mdn.sch.id/__statics/gudangsoal/files/coin-master-hack-download-2021_GM406889139.pdf
    • https://elearning.mtsn2mdn.sch.id/__statics/gudangsoal/files/free-chest-coin-master_GM406889139.pdf
    • https://elearning.mtsn2mdn.sch.id/__statics/gudangsoal/files/free-texture-packs-for-minecraft-pe_GM479516143.pdf
    • https://elearning.mtsn2mdn.sch.id/__statics/gudangsoal/files/how-can-i-get-free-robux_GM431946152.pdf
    • https://elearning.mtsn2mdn.sch.id/__statics/gudangsoal/files/free-robux-easy-and-fast_GM431946152.pdf
    • https://elearning.mtsn2mdn.sch.id/__statics/gudangsoal/files/free-coin-master-spins-for-today_GM406889139.pdf
    • https://elearning.mtsn2mdn.sch.id/__statics/gudangsoal/files/coin-master-unlimited-spin-apk-free-download_GM406889139.pdf
    • https://elearning.mtsn2mdn.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-by-playing-games_GM431946152.pdf
    • https://elearning.mtsn2mdn.sch.id/__statics/gudangsoal/files/hacks-for-roblox-prison-life_GM431946152.pdf
    • https://elearning.mtsn2mdn.sch.id/__statics/gudangsoal/files/free-robux-without-verification_GM431946152.pdf
    • https://elearning.mtsn2mdn.sch.id/__statics/gudangsoal/files/free-spins-coin-master-2021_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004bd0.bin
98de0bb214533d67d6c8af8cfc24b13e0a0a9794e24a66a39d574e59a2f0f0af		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BD0 25576 bytes
font_01_sfnt_off00008616.bin
4d658ccafa0b893d8d7fed2f8c747f895118d61cffd562c1959dd86f9709654a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8616 18832 bytes

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