Malicious PDF — malware analysis report

Static analysis result for SHA-256 7726c169d1425868…

MALICIOUS

PDF

44.8 KB Created: 2021-06-03 22:16:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: c4eaabe4402fe8e15a32633464f7ebc0 SHA-1: 51c820c82b871e68bbfbd08924c2ef01fc9e1266 SHA-256: 7726c169d14258685e721a98effa87fcf2f46d5022a09c1159505116517dcc91
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. It uses a fake-CAPTCHA lure. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 5

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • 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/406889139/coin-master-apk-free-download-game-hack PDF link annotation
    • http://library.stiks-tarakanita.ac.id/repository/coin-master-hack-xyz-download-free_GM406889139.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/how-do-you-get-roebucks-for-free_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/will-tiktok-free-download_GM835599320.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/coin-master-apk_GM406889139.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/free-robux-no-downloading-apps_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/how-to-get-more-robux_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/coin-master-tool-hack_GM406889139.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/minecraft-windows-10-edition-hacks_GM479516143.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/robux-cheat_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/minecraft-hacker-mask_GM479516143.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/coin-master-free-blogspot_GM406889139.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/free-robux-generator_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/coin-master-free-spins-coins_GM406889139.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/coin-master-hack-app-android_GM406889139.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/game-toolbox_GM479516143.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/roblox-com-r_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/free-roblox-clothes_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/coin-master-mod-apk-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004d3a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D3A 30368 bytes
SHA-256: 39dabeb87d7aa347b8073411db73fe7c41aadc662f0a7eabb5c38500ed419107
font_01_sfnt_off00008b6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B6C 18636 bytes
SHA-256: 352d929b5f45d1d816cf71c40016a6b8bab10c0c0acb2d1be8608963c5a906f7

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