Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f9d34fcf00062d2…

MALICIOUS

PDF

49.5 KB Created: 2021-06-03 12:42:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: f3ff1db9e81a09b985fa4c282e8be3d8 SHA-1: fc13f4504970413cabb026db2b09ff5635fb07ae SHA-256: 7f9d34fcf00062d250bbb59e8f724af56bd7f2afa44cd0f82ee1849691e00c7f
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. 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 0.9796

Heuristics 4

  • 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.
  • 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-hack-unlimited-spins-apk-download-game-hack PDF link annotation
    • http://opac.stiesa.ac.id/repository/twitter-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/toolbox-premium-apk_GM479516143.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/roblox-jailbreak-hack_GM431946152.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/free-printable-roblox-coloring-pages_GM431946152.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/roblox-com-robux_GM431946152.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/coin-master-apk-hack-2021-ios_GM406889139.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/minecraft-java-edition-free-download-for-android_GM479516143.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/roblox-executor-free_GM431946152.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/thicc-legends-hacks-roblox_GM431946152.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/reddit-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/free-roblox-accounts-with-robux-that-work-not-banned_GM431946152.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/moon-active-games_GM406889139.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/wurst-18-9_GM479516143.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/roblox-robux-generator_GM431946152.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/minecraft-sign-up-free_GM479516143.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/how-do-you-get-free-daily-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/coin-master-apk-free-download_GM406889139.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/free-robux-app-real_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005201.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5201 23876 bytes
SHA-256: b5cbc3e4d53cede5c5768a6ee83ab1a98dbd2c40a856ae5abf2b77c00bd81bd8
font_01_sfnt_off00008882.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8882 8676 bytes
SHA-256: e06aca5f85e50ae6cefda302c5299c18ab6d27c174f74f0bb0ee8efa7ccb4468
font_02_sfnt_off00009d0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D0D 18916 bytes
SHA-256: 36b5946d0fa01df03061b9872aea65f63cba93bccd0378a8f0b0329212d0019c

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