Malicious PDF — malware analysis report

Static analysis result for SHA-256 50198d046d89eea8…

MALICIOUS

PDF

46.3 KB Created: 2021-06-03 08:48:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 94d575864e1eb1612a97560045d0b5fd SHA-1: 89062448944346024f5494b4749fa6f0d039632d SHA-256: 50198d046d89eea86bb3b6035cf67595847a959dd4ab245972bcedcb5e275881
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 0.9832

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 https://netcdn.online/app/406889139/how-many-levels-are-there-in-coin-master-game-hack PDF link annotation
    • http://library.fisip.upnvj.ac.id/repository/free-robux-for-free_GM431946152.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/easy-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/what-do-points-do-in-roblox_GM431946152.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/coin-master-heaven-free-spins_GM406889139.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/pubg-uc-official-price_GM1330123889.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/hack-coin-master-mod-apk_GM406889139.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/roblox-hackers-list_GM431946152.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/how-to-get-free-robux-instantly_GM431946152.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/free-free-robux_GM431946152.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/coin-master-free-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/gaming-dunia-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/coin-master-400-spin-link-today_GM406889139.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/how-to-buy-robux-for-free_GM431946152.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/free-robux-no-apps_GM431946152.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/links-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/free-spin-coin-master-apk_GM406889139.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/free-shirt-templates-roblox_GM431946152.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/roblox-gift-card-online-free_GM431946152.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/pokemon-go-free-yveltal_GM1094591345.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/easy-points-gg_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
stream_004_off0000510b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x510B 29192 bytes
SHA-256: aaf3174c53b4ffd4019ad8c196edcd358317fac6aa4fbc574035936437a70ed4
font_01_sfnt_off000092a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92A7 18244 bytes
SHA-256: 7a3e09ddd81ff0bf88cf020c99e068e580145ca5d489a9015f3b374a3ae3c451

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