Malicious PDF — malware analysis report

Static analysis result for SHA-256 373ad73cbdfcef27…

MALICIOUS

PDF

43.8 KB Created: 2021-05-11 05:02:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 69f019f3d0015d8da67889ead18d04de SHA-1: ee282ba5872c6d14487ddac5bf50a218f1c1cfba SHA-256: 373ad73cbdfcef274f63cd86466ca88ed765fc7c9c81f1cead292eb29bc91b61
82 Risk Score

Malware Insights

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

The document contains a fake CAPTCHA lure, a common social engineering tactic to trick users into clicking malicious links. The embedded URL, https://netcdn.xyz/app/431946152/free-robux-websites-no-human-verification-game-hack, likely leads to a scam or malware download site. The presence of multiple related URLs suggests a campaign focused on in-game currency scams.

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/free-robux-websites-no-human-verification-game-hack PDF link annotation
    • https://www.sonestad.se/library/repository/how-to-get-free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/coin-master-free-spins-hack-but-no-surveys_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/bloxpink-free-robux_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/roblox-hair-for-free_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/how-do-you-install-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/free-robux-no-scam_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/coin-master-app-hacks_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/roblox-cheat_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/coin-master-free-download-app_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/coin-master-hack-app-2021-download_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/getrobux-now_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/hack-coin-master-apk-2021_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/picture-roblox_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/how-to-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/sites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/best-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/minecraft-free-apk_GM479516143.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/free-robux-generator-without-verification_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/coin-master-daily-free-spins-today_GM406889139.pdfIn 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
stream_003_off000049c6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49C6 27476 bytes
SHA-256: f29d89b43b2f5c8e9c5e6947ddbb85e857b62dc6977a8dda4c12f86dfdbe5f43
font_01_sfnt_off000086a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86A6 19056 bytes
SHA-256: b278ed256549c6e4f6c448dba943d0e72c7f64ebe7340c12334ea4705f26c648

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