Malicious PDF — malware analysis report

Static analysis result for SHA-256 e418fb16ce72be1e…

MALICIOUS

PDF

34.8 KB Created: 2021-06-22 17:03:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-14
MD5: b4025ce32288af4dad683bad09070393 SHA-1: 668373e194ea82dc5671cbd5e2efadefaa0a8929 SHA-256: e418fb16ce72be1ef7decdda827daaafa81b34ab0cbcbc210726c5f4029659b7
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains numerous links to external websites, many of which are presented as game hacks or cheats. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of such links, suggesting a malicious intent to redirect users to potentially harmful content. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.co/app/431946152/naruto-universe-hack-roblox-game-hack PDF link annotation
    • https://klinikdentalestetic.com/ckfinder/userfiles/files/free-coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://klinikdentalestetic.com/ckfinder/userfiles/files/wurst-client-112-2_GM479516143.pdfIn PDF document text
    • https://klinikdentalestetic.com/ckfinder/userfiles/files/minecraft-name-tag-hacks_GM479516143.pdfIn PDF document text
    • https://klinikdentalestetic.com/ckfinder/userfiles/files/minecraft-windows-10-edition-free-download_GM479516143.pdfIn PDF document text
    • https://klinikdentalestetic.com/ckfinder/userfiles/files/como-hackear-coin-master-sin-verificacion-humana_GM406889139.pdfIn PDF document text
    • https://klinikdentalestetic.com/ckfinder/userfiles/files/roblox-hack-that-works-jailbreak_GM431946152.pdfIn PDF document text
    • https://klinikdentalestetic.com/ckfinder/userfiles/files/minecraft-skins-free-girl_GM479516143.pdfIn PDF document text
    • https://klinikdentalestetic.com/ckfinder/userfiles/files/can-i-get-robux-for-free_GM431946152.pdfIn PDF document text
    • https://klinikdentalestetic.com/ckfinder/userfiles/files/tiktok-free-likes-and-views_GM835599320.pdfIn PDF document text
    • https://klinikdentalestetic.com/ckfinder/userfiles/files/como-ser-hacker-roblox_GM431946152.pdfIn PDF document text
    • https://klinikdentalestetic.com/ckfinder/userfiles/files/how-to-get-free-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • https://klinikdentalestetic.com/ckfinder/userfiles/files/coin-master-free-coins-hack_GM406889139.pdfIn PDF document text
    • https://klinikdentalestetic.com/ckfinder/userfiles/files/robux-free-online_GM431946152.pdfIn PDF document text
    • https://klinikdentalestetic.com/ckfinder/userfiles/files/free-coins-and-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://klinikdentalestetic.com/ckfinder/userfiles/files/get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://klinikdentalestetic.com/ckfinder/userfiles/files/how-do-you-get-robux_GM431946152.pdfIn PDF document text
    • https://klinikdentalestetic.com/ckfinder/userfiles/files/best-admin-hack-for-roblox_GM431946152.pdfIn PDF document text
    • https://klinikdentalestetic.com/ckfinder/userfiles/files/tampermonkey-roblox-hack_GM431946152.pdfIn PDF document text
    • https://klinikdentalestetic.com/ckfinder/userfiles/files/fb-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • https://klinikdentalestetic.com/ckfinder/userfiles/files/microsoft-free-robux_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_off0000306c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x306C 22456 bytes
SHA-256: 4bc25eee143e208119b0124fff60051a51a8030d1667c681ea3eb20281be7875
font_01_sfnt_off000062a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62A8 19136 bytes
SHA-256: 7ffea1b9ed14e286694d1b50c0f9a8985ee2562d898570ed7a4995c9e0f9eeec

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