PDF malware analysis — malicious · 1fcf64781bf724de

MALICIOUS

PDF

36.2 KB Created: 2021-07-03 22:21:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: bfad19dd8bb14ada00ca89e2f8a181e0 SHA-1: 7a6bf63ccd9042a34b07ddfda6c73f8b2a1c5cd8 SHA-256: 1fcf64781bf724def37eb35c5a7b54eba38f75cb5c57e4f9909deec6850f85f4

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-cheats-without-verification-game-hack PDF link annotation
- https://www.portalgrandeponto.com.br/public/uploads/galerias/ckeditor/files/free-robux-for-kids_GM431946152.pdfIn PDF document text
- https://www.portalgrandeponto.com.br/public/uploads/galerias/ckeditor/files/free-minecraft-website_GM479516143.pdfIn PDF document text
- https://www.portalgrandeponto.com.br/public/uploads/galerias/ckeditor/files/hacks-roblox-2021_GM431946152.pdfIn PDF document text
- https://www.portalgrandeponto.com.br/public/uploads/galerias/ckeditor/files/coin-master-free-spins-usa-2021_GM406889139.pdfIn PDF document text
- https://www.portalgrandeponto.com.br/public/uploads/galerias/ckeditor/files/how-do-i-earn-robux_GM431946152.pdfIn PDF document text
- https://www.portalgrandeponto.com.br/public/uploads/galerias/ckeditor/files/hacks-para-roblox-inparcheable_GM431946152.pdfIn PDF document text
- https://www.portalgrandeponto.com.br/public/uploads/galerias/ckeditor/files/how-to-get-free-robux-easy-no-download_GM431946152.pdfIn PDF document text
- https://www.portalgrandeponto.com.br/public/uploads/galerias/ckeditor/files/how-to-make-a-minecraft-client_GM479516143.pdfIn PDF document text
- https://www.portalgrandeponto.com.br/public/uploads/galerias/ckeditor/files/a-hack-to-steal-robux_GM431946152.pdfIn PDF document text
- https://www.portalgrandeponto.com.br/public/uploads/galerias/ckeditor/files/free-draw-roblox_GM431946152.pdfIn PDF document text
- https://www.portalgrandeponto.com.br/public/uploads/galerias/ckeditor/files/roblox-free-phantom-forces-account_GM431946152.pdfIn PDF document text
- https://www.portalgrandeponto.com.br/public/uploads/galerias/ckeditor/files/free-robux-doing-tasks_GM431946152.pdfIn PDF document text
- https://www.portalgrandeponto.com.br/public/uploads/galerias/ckeditor/files/june-29-coin-master-hack-no-human-verification_GM406889139.pdfIn PDF document text
- https://www.portalgrandeponto.com.br/public/uploads/galerias/ckeditor/files/get-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
- https://www.portalgrandeponto.com.br/public/uploads/galerias/ckeditor/files/cheat-engine-roblox-20212021_GM431946152.pdfIn PDF document text
- https://www.portalgrandeponto.com.br/public/uploads/galerias/ckeditor/files/minecraft-mac-free_GM479516143.pdfIn PDF document text
- https://www.portalgrandeponto.com.br/public/uploads/galerias/ckeditor/files/free-robux-no-gift-card_GM431946152.pdfIn PDF document text
- https://www.portalgrandeponto.com.br/public/uploads/galerias/ckeditor/files/hacking-roblox-reddit_GM431946152.pdfIn PDF document text
- https://www.portalgrandeponto.com.br/public/uploads/galerias/ckeditor/files/coin-master-free-spins-for-iphone_GM406889139.pdfIn PDF document text
- https://www.portalgrandeponto.com.br/public/uploads/galerias/ckeditor/files/coin-master-free-coins-and-spins-today_GM406889139.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_off00003623.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3623	23100 bytes
SHA-256: `d9d4c49ab575b343cfc47e3bffe80dfcd0a5c8d72ea6a0a36dd85dba53969cc3`
`font_01_sfnt_off00006a2f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6A2F	18472 bytes
SHA-256: `2357afe3a77e7c014e0703bcbd81075a5d1dab6d586aa1429deb4951cf781cee`

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