Malicious PDF — malware analysis report

Static analysis result for SHA-256 3128163aaca8641b…

MALICIOUS

PDF

35.2 KB Created: 2021-07-05 14:37:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 11986a4566ca1bf912360d052ea88628 SHA-1: 1356429b17045dac296b271502d9e73685388050 SHA-256: 3128163aaca8641bb5f2d1a273a6f65ad4a970a032c387a49f00fe7ea29a8ca3
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple external links, including one specifically identified as a 'free generator / game hack' lure. The document body and extracted URLs strongly suggest a phishing or scam attempt, likely aiming to trick users into visiting malicious sites. No scripts were extracted, but the presence of external links and the lure indicate a high likelihood of further malicious activity.

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/431946152/op-rewards-free-robux-game-hack PDF link annotation
    • http://windhorsetrek.com/userfiles/files/how-to-get-minecraft-for-free-on-android-device_GM479516143.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/lots-of-robux_GM431946152.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/get-me-robux-for-free_GM431946152.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/free-free-robux_GM431946152.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/roblox-group-free-robux_GM431946152.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/how-to-get-free-robux-gift-cards_GM431946152.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/mcpe-master-unlimited-coins-free-download_GM406889139.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/roblox-accounts-for-sale-free_GM431946152.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/how-many-levels-in-coin-master_GM406889139.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/coin-master-heaven-free-spins-today_GM406889139.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/coin-master-free-spins-and-cards_GM406889139.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/hack-roblox-window_GM431946152.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/coin-master-facebook_GM406889139.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/minecraft-free-download-windows_GM479516143.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/how-to-get-free-pet-snacks-in-coin-master_GM406889139.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/coin-master-download-hack_GM406889139.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/10-robux-free_GM431946152.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/static-moonactive-net-free-spins-coin-master_GM406889139.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_off00002ef7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EF7 23392 bytes
SHA-256: 4d845cdcb82e48f61ebef2f2fe18edaf6fdf1349a2b429bb8722abeac1e8a4f7
font_01_sfnt_off00006404.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6404 19228 bytes
SHA-256: 88193be72d85b9c8494d9d96b6ede0bb60f73a66de9b6cc6b025526371ffb90a

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