Malicious PDF — malware analysis report

Static analysis result for SHA-256 890d235e042d0564…

MALICIOUS

PDF

34.9 KB Created: 2021-07-04 01:51:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 56f108f0bcb65669fdacaf53a6ef8e84 SHA-1: 77db49f78117e4166ff453aa6fb27a9588963104 SHA-256: 890d235e042d056434b889e782cc67880e16fcb6182110b3ddb8eaa706d38b08
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document contains multiple links, including one specifically pointing to a 'coin-master-mod-game-hack'. The ML classifier and heuristics strongly indicate malicious intent, likely to redirect users to a site offering fraudulent game cheats or hacks. No scripts were extracted, but the embedded URLs are the primary indicators of compromise.

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-mod-game-hack PDF link annotation
    • http://uilis.unsyiah.ac.id/ebook/repository/how-to-make-a-free-vip-server-on-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/free-robux-generator-without-human-verification_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/how-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/free-roblox-money_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/hack-coin-master-free_GM406889139.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/free-robux-wheel_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/how-to-hack-elemental-battlegrounds-roblox-2021_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/minecraft-free-download-windows_GM479516143.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/roblox-hack-stats-one-piece-millenium_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/hack-assassin-roblox_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/ooby-give-you-free-robux-husky-roblox-youtube_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/free-coins-and-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/roblox-builders-club-hack_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/what-do-roblox-points-do_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/freerobux-co_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/how-to-get-robux-hack-without-human-verification_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/roblox-admin-hack-s_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/free-robux-no-human-verify_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_off000032e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32E8 22988 bytes
SHA-256: 6fdca572572e7e40a0a84cfeb8b9b93adaa8092f6f8c69f06e850a4d15ab09b5
font_01_sfnt_off00006689.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6689 18008 bytes
SHA-256: 9b1b8022fecd0e698345aa4518e5e5ceb9dfed4ff19bb9e19d156964a7983e20

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