Malicious PDF — malware analysis report

Static analysis result for SHA-256 726e8f1705736f7c…

MALICIOUS

PDF

33.1 KB Created: 2021-07-04 20:44:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: af407fe16abdeb3a868b39e1fd67ccca SHA-1: ae3e2dbadda20e6c8c19e80c9373124ce5129f96 SHA-256: 726e8f1705736f7c00f059783422b8b82a07bee2f029f8ee73d7b5e778329298
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/835599320/tiktok-free-download-game-hack PDF link annotation
    • http://perpustakaan.pa-dompu.go.id/repository/hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/how-to-get-minecraft-for-free-ios_GM479516143.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/minecraft-for-free-games_GM479516143.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/how-to-get-the-ultimate-victory-for-free-in-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id//repository/spin-rewards-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/free-robux-not-fake-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/hack-coin-master-ios-download_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id//repository/free-roblox-templates_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/dark-dominus-roblox-codes-free_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/how-to-get-unlimited-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/rblx-city-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/elemental-battle-grounds-hack-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/roblox-cheats-for-robux-easy_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/play-roblox-for-free-online-without-downloading_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/free-robux-hack-yolasite-com_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/hacks-de-roblox-para-teletransportarse_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/coin-master-generator-hack_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id//repository/get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/groups-that-give-out-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/free-roblox-group-generator_GM431946152.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_off00002feb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FEB 20996 bytes
SHA-256: 6a1ae48c729944041e3e05e46906f07a829e0fcca4fb1a2fefdefe7199f69e86
font_01_sfnt_off00005d78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D78 18552 bytes
SHA-256: d5b8dc2e36203d7d71bfb1ae27fc4cad5f3a8ae201c23641eeaa9dedc2df9ab4

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