Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf0ca2ea0040f8f0…

MALICIOUS

PDF

33.6 KB Created: 2021-07-04 12:34:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: d68f994a7d788c7d3b183da55a294df2 SHA-1: b33857ec692cd426c0717ed5a897011004a7f591 SHA-256: cf0ca2ea0040f8f013f8929d765b6f080003df593707700ed5d76884913ca63f
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/how-to-get-free-spins-on-coin-master-hack-game-hack PDF link annotation
    • http://pustaka.smpmuh2yk.sch.id/repository/coin-master-hack-safe_GM406889139.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/how-to-get-free-shirts-on-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/free-spins-coin-master-daily_GM406889139.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/free-avatar-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/roblox-cheat_GM431946152.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/roblox-toy-codes-list-free_GM431946152.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/coin-master-free-spins-link-blogspot-today_GM406889139.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/hack-to-send-gold-cards-on-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/facebook-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/how-many-villages-are-in-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/how-to-hack-peoples-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/minecraft-hacks-wurst_GM479516143.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/coin-master-hack-without-verification-code-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/www-robux-us_GM431946152.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/free-robux-generator-without-verification_GM431946152.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/minecraft-pe-mod-menu_GM479516143.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/robux-earning-websites_GM431946152.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/roblox-cheat-engine-64-money-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/free-minecraft-mods-for-ps4_GM479516143.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_off00002ed9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2ED9 22208 bytes
SHA-256: 8f0918bce5b28d3bb25790364f551200758d4996fbf0eb14be74d07b5b3cd807
font_01_sfnt_off00005fe1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FE1 18508 bytes
SHA-256: 49bb361051a993f9084e846f2e5cc7d9ef6f782e1735768e7a619114b4d1f8ea

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