Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d903277b7bc1f33…

MALICIOUS

PDF

35.9 KB Created: 2021-06-18 23:04:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: bf4a3e97688ac363e44989fa7193c37d SHA-1: 9024239731d8269e8dded8c03c4d74397950b4b7 SHA-256: 1d903277b7bc1f338debc31879bc52d6fa727e1c5355e8d11a3e1b2310f4cd4c
82 Risk Score

Malware Insights

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

The document presents itself as a lure for game-related cheats or accounts, employing a fake CAPTCHA to trick users into clicking a malicious link. The embedded URL and numerous other URLs point to sites offering such cheats, suggesting a phishing or scamming attempt. No scripts were extracted, but the document's structure and content strongly indicate a social engineering attack.

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 http://netcdn.co/app/431946152/free-roblox-accounts-2021-game-hack PDF link annotation
    • https://elearning.mtsn2kukar.sch.id/__statics/gudangsoal/files/free-robux-com_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2kukar.sch.id/__statics/gudangsoal/files/coin-master-hacks-for-free-spins_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2kukar.sch.id/__statics/gudangsoal/files/free-minecraft-codes-2021_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn2kukar.sch.id/__statics/gudangsoal/files/hack-coin-master-app-ios_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2kukar.sch.id/__statics/gudangsoal/files/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2kukar.sch.id/__statics/gudangsoal/files/free-likes-on-tiktok_GM835599320.pdfIn PDF document text
    • https://elearning.mtsn2kukar.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2kukar.sch.id/__statics/gudangsoal/files/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2kukar.sch.id/__statics/gudangsoal/files/robux-free-online_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2kukar.sch.id/__statics/gudangsoal/files/microsoft-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2kukar.sch.id/__statics/gudangsoal/files/is-minecraft-education-edition-free_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn2kukar.sch.id/__statics/gudangsoal/files/hacker-minecraft-song_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn2kukar.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-download_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2kukar.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins-link-app-download_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2kukar.sch.id/__statics/gudangsoal/files/coin-master-hack-apk-online_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2kukar.sch.id/__statics/gudangsoal/files/free-robux-without-offers_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2kukar.sch.id/__statics/gudangsoal/files/i-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2kukar.sch.id/__statics/gudangsoal/files/cheat-roblox-one-piece-millenium_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2kukar.sch.id/__statics/gudangsoal/files/best-free-minecraft-servers_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn2kukar.sch.id/__statics/gudangsoal/files/free-fire-vs-pubg-tik-tok_GM835599320.pdfIn PDF document text
    • https://www.roblox.com/.IIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000035ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x35AD 22084 bytes
SHA-256: 1dbf1dc57dc268e6222b5161aca4d8b985516a022956b0bb77b6423b3d683cbc
font_01_sfnt_off00006686.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6686 19296 bytes
SHA-256: e80322954fcac7f4a2de879a7519f1815ce797af75ba555cfc46f0e031ec9aed

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