Malicious PDF — malware analysis report

Static analysis result for SHA-256 659dae2ec38a956e…

MALICIOUS

PDF

43.3 KB Created: 2021-05-18 05:35:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 776d9e0e4c8395673ccd6e75dd64bf64 SHA-1: dbdfcfb2b358f4758b3023de75129a46ed95656f SHA-256: 659dae2ec38a956e0fb1e7321fa8974fb24d4b83e6ee272becdff4e5ed239baf
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 0.9969

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.xyz/app/431946152/how-to-hack-people-on-roblox-game-hack PDF link annotation
    • http://windhorsetrek.com/userfiles/files/coin-master-ios-gods-hack_GM406889139.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/how-to-get-minecraft-for-free-ios_GM479516143.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/get-free-robux_GM431946152.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/roblox-robux_GM431946152.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/how-to-get-minecraft-for-free-on-laptop_GM479516143.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/try-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/roblox-free-skin_GM431946152.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/aimbot-exe-roblox_GM431946152.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/rare-free-links-to-coin-master_GM406889139.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/hacks-for-minecraft-windows-10_GM479516143.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/how-to-hack-someone-on-roblox_GM431946152.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/coin-master-free-cards-link_GM406889139.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/free-coin-master-cards_GM406889139.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/how-do-you-get-free-food-on-coin-master_GM406889139.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/a-lot-of-robux_GM431946152.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/roblox-hack-site_GM431946152.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/how-to-hack-roblox-accounts-2021-easy_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_off00004a05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A05 25908 bytes
SHA-256: 4e314afd79bdee5cf7526d5c1cb97f54defb904100c8382566fee2be5c16e021
font_01_sfnt_off000085be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85BE 18676 bytes
SHA-256: 9439cdf519c477105af26a237b903c28353edd649090bb99f856962d56c9ecd1

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