Malicious PDF — malware analysis report

Static analysis result for SHA-256 e28a104f0f74049b…

MALICIOUS

PDF

44.5 KB Created: 2021-05-17 02:00:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: c7a49f06dd9c10022d294523c491469d SHA-1: ae523da31126c6652e03425035461b232a0187a0 SHA-256: e28a104f0f74049b7526d78a178fb49c77f7baf4fcb9eb03f3231d63528b415f
82 Risk Score

Malware Insights

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

The document presents a fake CAPTCHA lure to deceive users into interacting with malicious links. The primary external URI points to a resource that likely serves a malicious payload, disguised as a game hack. The ML classifier strongly indicates maliciousness, supporting the observed social engineering tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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/406889139/coinmaster-gps-user-review-coinmaster-coin-master-hack-pagedemo-index-game-hack
    • https://www.elearning.madarulihsansamarinda.sch.id/__statics/gudangsoal/files/real-working-coin-master-hack_GM406889139.pdf
    • https://www.elearning.madarulihsansamarinda.sch.id/__statics/gudangsoal/files/coin-master-60-spins_GM406889139.pdf
    • https://www.elearning.madarulihsansamarinda.sch.id/__statics/gudangsoal/files/free-spin-link-in-coin-master_GM406889139.pdf
    • https://www.elearning.madarulihsansamarinda.sch.id/__statics/gudangsoal/files/get-roebucks-com_GM431946152.pdf
    • https://www.elearning.madarulihsansamarinda.sch.id/__statics/gudangsoal/files/coin-master-free-spins-no-human-verification_GM406889139.pdf
    • https://www.elearning.madarulihsansamarinda.sch.id/__statics/gudangsoal/files/free-minecraft-skin-maker_GM479516143.pdf
    • https://www.elearning.madarulihsansamarinda.sch.id/__statics/gudangsoal/files/how-to-free-robux_GM431946152.pdf
    • https://www.elearning.madarulihsansamarinda.sch.id/__statics/gudangsoal/files/hack-coin-master-android-2021_GM406889139.pdf
    • https://www.elearning.madarulihsansamarinda.sch.id/__statics/gudangsoal/files/free-spins-coin-master-2021_GM406889139.pdf
    • https://www.elearning.madarulihsansamarinda.sch.id/__statics/gudangsoal/files/coin-master-34-4-hack_GM406889139.pdf
    • https://www.elearning.madarulihsansamarinda.sch.id/__statics/gudangsoal/files/minecraft-client_GM479516143.pdf
    • https://www.elearning.madarulihsansamarinda.sch.id/__statics/gudangsoal/files/free-coins-and-spins-for-coin-master_GM406889139.pdf
    • https://www.elearning.madarulihsansamarinda.sch.id/__statics/gudangsoal/files/robux-hack-2021_GM431946152.pdf
    • https://www.elearning.madarulihsansamarinda.sch.id/__statics/gudangsoal/files/coin-master-hack-mod-apk_GM406889139.pdf
    • https://www.elearning.madarulihsansamarinda.sch.id/__statics/gudangsoal/files/roblox-inappropriate-games_GM431946152.pdf
    • https://www.elearning.madarulihsansamarinda.sch.id/__statics/gudangsoal/files/free-robux-redeem-codes-2021_GM431946152.pdf
    • https://www.elearning.madarulihsansamarinda.sch.id/__statics/gudangsoal/files/coin-master-hack-tool-2021_GM406889139.pdf
    • https://www.elearning.madarulihsansamarinda.sch.id/__statics/gudangsoal/files/mobihack-net-roblox-hack_GM431946152.pdf
    • https://www.elearning.madarulihsansamarinda.sch.id/__statics/gudangsoal/files/roblox-free-clothes-hack_GM431946152.pdf
    • https://www.elearning.madarulihsansamarinda.sch.id/__statics/gudangsoal/files/coin-master-free-download-app_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004f28.bin
8e4ee6a5612481ac02cfa0bcbda1db34b1632e0a71c1c7ddfa0a69ad98ec618e		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F28 25140 bytes
font_01_sfnt_off0000884e.bin
758f131b5ad06ada387de192ccba962ec8204edab22f872f65cf4aad9f2ca4c6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x884E 19440 bytes

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