Malicious PDF — malware analysis report

Static analysis result for SHA-256 17cd6ec4954804ab…

MALICIOUS

PDF

35.0 KB Created: 2021-07-05 07:05:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 98e1520c2e01c92021327551b080bc33 SHA-1: ab60228462360fa2f96ac034ed5fd5924610e5d6 SHA-256: 17cd6ec4954804ab4610a353123eb2f735906971b79b7fbd9ef6be4cd2408902
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-severity heuristic firing indicating it links to a 'free generator / game hack' redirector. The document body and embedded URLs reinforce this lure, pointing to a URL associated with game hacks. This suggests the primary goal is to trick users into visiting a malicious site, likely for further exploitation or malware delivery.

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/blogspot-free-spins-coin-master-game-hack PDF link annotation
    • https://kultura.orb.ru/uploads/ckfinder/userfiles/files/free-spin-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://kultura.orb.ru/uploads/ckfinder/userfiles/files/roblox-troll-outfits-free_GM431946152.pdfIn PDF document text
    • https://kultura.orb.ru/uploads/ckfinder/userfiles/files/microsoft-robux_GM431946152.pdfIn PDF document text
    • https://kultura.orb.ru/uploads/ckfinder/userfiles/files/minecraft-hack-ios_GM479516143.pdfIn PDF document text
    • https://kultura.orb.ru/uploads/ckfinder/userfiles/files/coin-master-apk-hack-2021_GM406889139.pdfIn PDF document text
    • https://kultura.orb.ru/uploads/ckfinder/userfiles/files/how-to-make-a-roblox-group-for-free_GM431946152.pdfIn PDF document text
    • https://kultura.orb.ru/uploads/ckfinder/userfiles/files/roblox-redeem-codes-free_GM431946152.pdfIn PDF document text
    • https://kultura.orb.ru/uploads/ckfinder/userfiles/files/coin-master-hack-version_GM406889139.pdfIn PDF document text
    • https://kultura.orb.ru/uploads/ckfinder/userfiles/files/minecraft-free-play-no-download_GM479516143.pdfIn PDF document text
    • https://kultura.orb.ru/uploads/ckfinder/userfiles/files/roblox-www-com_GM431946152.pdfIn PDF document text
    • https://kultura.orb.ru/uploads/ckfinder/userfiles/files/free-roblox-clothes-boy_GM431946152.pdfIn PDF document text
    • https://kultura.orb.ru/uploads/ckfinder/userfiles/files/minecraft-sign-up-free_GM479516143.pdfIn PDF document text
    • https://kultura.orb.ru/uploads/ckfinder/userfiles/files/coin-master-free-spins-and-free-coins_GM406889139.pdfIn PDF document text
    • https://kultura.orb.ru/uploads/ckfinder/userfiles/files/coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • https://kultura.orb.ru/uploads/ckfinder/userfiles/files/minecraft-java-edition-code-free_GM479516143.pdfIn PDF document text
    • https://kultura.orb.ru/uploads/ckfinder/userfiles/files/minecraft-free-download-mac-full-version_GM479516143.pdfIn PDF document text
    • https://kultura.orb.ru/uploads/ckfinder/userfiles/files/free-robux-com-real_GM431946152.pdfIn PDF document text
    • https://kultura.orb.ru/uploads/ckfinder/userfiles/files/delitive-mod-cheat-codes-roblox_GM431946152.pdfIn PDF document text
    • https://kultura.orb.ru/uploads/ckfinder/userfiles/files/how-to-get-free-robux-with-cheat-engine-66-2021_GM431946152.pdfIn PDF document text
    • https://kultura.orb.ru/uploads/ckfinder/userfiles/files/avatar-roblox-game_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_off000033b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33B1 22484 bytes
SHA-256: 6f646f4200f28bc3828d3c111b38f3656d8c3d7ff63009875bf8da69c0330971
font_01_sfnt_off0000659c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x659C 18464 bytes
SHA-256: 230ca97f16dd2ddf1879142f15263642e6919db147f0bcf840325c8143f28d8e