Malicious PDF — malware analysis report

Static analysis result for SHA-256 740e468b35b4ad4f…

MALICIOUS

PDF

35.5 KB Created: 2021-07-05 19:39:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 1dc4c5f118545c5aa5bd31ff533281b7 SHA-1: 87626a48dba29f38a06b8813c392577a1700106b SHA-256: 740e468b35b4ad4f8734170b5468456c73c534daae9ece1e3ff9fda508c494a2
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains a prominent link to a website offering 'coin master free spins' and 'game hack' generators. This lure is a common tactic to redirect users to potentially malicious sites that may host malware or phishing content. The ML classifier also flagged this PDF as malicious with high confidence.

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-daily-fb-champion-game-hack PDF link annotation
    • http://lib.uho.ac.id/library/repository/how-to-hack-games-on-roblox-rpg-rainbow-swords-rpg_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/free-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/free-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-free-spins-hack-download_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/hack-minecraft_GM479516143.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-free-spins-and-free-coins_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/free-robux-thumbnail_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/free-minecraft-accounts-reddit_GM479516143.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/robux-promode-hack_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/robux-today_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/microsoft-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/www-roblox-robux_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/wahoo-gaming-co-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/coin-master-free-coin-hack_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-spins-hack-2021_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/coin-master-mod-apk_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/how-to-make-a-minecraft-client_GM479516143.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/cheate-pour-roblox_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/roblox-free-items-2021_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/free-robux-generator_GM431946152.pdfIn PDF document text
    • https://www.urcouponsdeal.com/2019/03/coin-master-free-spin-and-coin-links.htmlIn 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_off00003381.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3381 22468 bytes
SHA-256: 09edc43329a871192fac8312d72fcd2b555e41bd49e519c6e2fba4829dde4700
font_01_sfnt_off0000658c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x658C 19180 bytes
SHA-256: 51e8a71e09394fed5f421e653934fdd3595df511c0ce3b30553a7297a7ed1ba3

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