Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e92d1c8a8c6a3ff…

MALICIOUS

PDF

34.6 KB Created: 2021-07-05 13:40:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 06ef3df38242523b63009da7c035c724 SHA-1: a69088fcfa0fae149db3b5c401cc76456f746c6d SHA-256: 3e92d1c8a8c6a3ff8c49553f975212037565d6b1d06aa3c052b8be4ddf700e81
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 0.9980

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 http://netcdn.tw/app/431946152/how-to-get-free-robux-no-human-verification-game-hack PDF link annotation
    • http://e-library.smkn1jombang.sch.id/repository/claim-free-robux-roblox-rewards_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/coin-master-hack-progamers_GM406889139.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/earn-free-robux_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/hack-clients-for-roblox-youtube_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/8bp-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/coin-master-free-spins-cheat-codes_GM406889139.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/minecraft-pc-download-free-full-version_GM479516143.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/free-robux-codes-generator_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/free-roblox-promoodes_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/codes-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/how-to-get-free-clothes-roblox-2021_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/how-to-get-free-minecraft-coins_GM479516143.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/minecraft-pocket-edition-free-download_GM479516143.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/coin-master-hack-apk-android_GM406889139.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/free-face-in-roblox_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/minecraft-book-collection_GM479516143.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/free-robux-please_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/pubg-uc-sale_GM1330123889.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/coin-master-online-hack-generator_GM406889139.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/coin-master-hack-fast_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
font_00_sfnt_off00002f96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F96 22328 bytes
SHA-256: 24eec076c25afc326c0e9e0469c60fc62fa19f96e543c117df522be4b34c9e4c
font_01_sfnt_off00006106.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6106 19496 bytes
SHA-256: 1b5d617a8bdf7849f857e8bf3a00ea7a9d2795cdb388484b070bb3e34f65ceb1

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