PDF malware analysis — malicious · 6ab3136bfe31b26b

MALICIOUS

PDF

34.3 KB Created: 2021-07-09 17:01:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: 18fd1242b4d61631ee35bfb69518388f SHA-1: d233fc973f3459328e1353559da462e476057e54 SHA-256: 6ab3136bfe31b26b4118b27eccf53c2114524f427b893671771d942e18100a25

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 0.9980

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/how-to-get-free-robux-on-phone-game-hack PDF link annotation
- https://kultura.orb.ru/uploads/ckfinder/userfiles/files/how-to-get-more-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
- https://kultura.orb.ru/uploads/ckfinder/userfiles/files/minecraft-mod-menu-apk_GM479516143.pdfIn PDF document text
- https://kultura.orb.ru/uploads/ckfinder/userfiles/files/groups-for-free-robux_GM431946152.pdfIn PDF document text
- https://kultura.orb.ru/uploads/ckfinder/userfiles/files/coin-master-attack-hack_GM406889139.pdfIn PDF document text
- https://kultura.orb.ru/uploads/ckfinder/userfiles/files/free-roblox-generator_GM431946152.pdfIn PDF document text
- https://kultura.orb.ru/uploads/ckfinder/userfiles/files/how-to-get-free-robux-on-phone-2021_GM431946152.pdfIn PDF document text
- https://kultura.orb.ru/uploads/ckfinder/userfiles/files/pubg-uc-2021_GM1330123889.pdfIn PDF document text
- https://kultura.orb.ru/uploads/ckfinder/userfiles/files/free-robux-hack-december-2021_GM431946152.pdfIn PDF document text
- https://kultura.orb.ru/uploads/ckfinder/userfiles/files/free-coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
- https://kultura.orb.ru/uploads/ckfinder/userfiles/files/free-robux-com-no-verification_GM431946152.pdfIn PDF document text
- https://kultura.orb.ru/uploads/ckfinder/userfiles/files/giving-away-free-robux-cards_GM431946152.pdfIn PDF document text
- https://kultura.orb.ru/uploads/ckfinder/userfiles/files/how-to-use-roblox-hack-scripts_GM431946152.pdfIn PDF document text
- https://kultura.orb.ru/uploads/ckfinder/userfiles/files/roblox-free-play-no-download_GM431946152.pdfIn PDF document text
- https://kultura.orb.ru/uploads/ckfinder/userfiles/files/how-to-install-minecraft-for-free-on-ios_GM479516143.pdfIn PDF document text
- https://kultura.orb.ru/uploads/ckfinder/userfiles/files/minecraft-for-chromebook-free_GM479516143.pdfIn PDF document text
- https://kultura.orb.ru/uploads/ckfinder/userfiles/files/how-can-you-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
- https://kultura.orb.ru/uploads/ckfinder/userfiles/files/free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
- https://kultura.orb.ru/uploads/ckfinder/userfiles/files/roblox-hack_GM431946152.pdfIn PDF document text
- https://kultura.orb.ru/uploads/ckfinder/userfiles/files/coin-master-cheats-free-spins_GM406889139.pdfIn PDF document text
- https://kultura.orb.ru/uploads/ckfinder/userfiles/files/does-roblox-hacks-your-bank-account_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.

Filename	Kind	Source	Size
`font_00_sfnt_off00003085.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3085	21776 bytes
SHA-256: `fd9844b88e4eafe2b78edb9fbeacc9309bddf3d0009c6e4f790666ccd3921091`
`font_01_sfnt_off00006069.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6069	19304 bytes
SHA-256: `aa366a8b430bfcb45c9bf263411bccf6e6397de5dc8c3d1b4c1ff1d910733f52`

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