PDF malware analysis — malicious · 8bbe7a33b199989b

MALICIOUS

PDF

34.8 KB Created: 2021-07-04 05:32:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: a744a6509e7309ced6815ab0a778877b SHA-1: 14ec93b3e1bc431cc53203eedbcd3011ea948a46 SHA-256: 8bbe7a33b199989b644364d3c7f0ef1e9bbe69d75c6fc00d1bb9d6a2029bd2c7

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/406889139/coin-master-mod-apk-game-hack PDF link annotation
- https://www.nordicstar.co.uk/uploads/files/files/free-robux-generator-no-verification_GM431946152.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/free-robux-site_GM431946152.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/free-robux-com_GM431946152.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/coin-master-cheat-apk-free-download_GM406889139.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/robux-no-verification_GM431946152.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/minecraft-build-hacks_GM479516143.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/coin-master-link_GM406889139.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/coin-master-free-cards-hack_GM406889139.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/how-to-get-roblox-premium-for-free_GM431946152.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/coin-master-free-spins-youthnow_GM406889139.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/promo-codes-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/coin-master-free-2021-spin-link-today_GM406889139.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/client-minecraft_GM479516143.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/how-to-get-free-clothes-on-roblox-2021_GM431946152.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/mine-minecraft-games-for-free_GM479516143.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/roblox-games-that-have-free-radio_GM431946152.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/all-coin-master-spin-link-and-free-download_GM406889139.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/coin-master-free-blogspot_GM406889139.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/roblox-robux-hack-apk-2021_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_off000030ad.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x30AD	23160 bytes
SHA-256: `7c35f2bc3213e481329cf50221cf72f8ceefbf6c56df0f927cd915ad2e9413fd`
`font_01_sfnt_off000064cc.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x64CC	18352 bytes
SHA-256: `8921705bb0180ef928bfc54a8bff441144a325a835df77ae2345570de02769c4`

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