Malicious PDF — malware analysis report

Static analysis result for SHA-256 428af14bced49006…

MALICIOUS

PDF

36.4 KB Created: 2021-07-03 17:14:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: d3928100d44518b265cb0c75ef4c5158 SHA-1: e6db4ceed63189749496e8c089d5c73c9e4bb15d SHA-256: 428af14bced49006c64e8e30f5c834593953eaad8a1045b1fba594479782d8f5
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/406889139/coin-master-free-spins-deutsch-download-ios-link-game-hack PDF link annotation
    • http://library.stikessuakainsan.ac.id/repository/hack-coin-master-apk_GM406889139.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/make-roblox-clothes-free_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/free-unlimitted-robux-generator_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/free-roblox-shirt-template-2021_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id//repository/coin-master-hack-tool-v1-9_GM406889139.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/followers-bot-free-roblox_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/how-to-get-free-robux-in-adopt-me_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/coin-master-coins-free_GM406889139.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/how-to-block-someone-on-coin-master_GM406889139.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/free-10-dollar-roblox-gift-card_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id//repository/haktuts-coin-master-free-spin-link-today_GM406889139.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/barren-cheats-roblox_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/free-robux-with-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/free-robux-for-nothing_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/minecraft-hax-download-no-virus_GM479516143.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/roblox-admin-house-hack_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/how-to-hack-ultimate-driving-roblox_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/t-shirt-roblox-girl-free_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/mobi-hack-robux-hack_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/coin-master-hack-mobile_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_002_off000034e9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x34E9 23160 bytes
SHA-256: 98e3feb8c2b73c5d3fa37d3cd81959fd8e75b629b6375735d46f6c926af58a77
font_01_sfnt_off0000691a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x691A 19228 bytes
SHA-256: 634a6888a1904234b303079f3dc1bf5a4e5ffef1388b284b3e88d08e2c9e8665

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