PDF malware analysis — malicious · d47248b5d2b78df2

MALICIOUS

PDF

35.1 KB Created: 2021-06-30 11:02:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24

MD5: e829e91de3ac5893110050a98fe47c22 SHA-1: 6948c3c8b491ee5cd1a2e97beca112339fd3b32c SHA-256: d47248b5d2b78df285175bf754facaa3d7286de931ffc40107c895df47a197db

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.co/app/431946152/free-roblox-toy-codes-november-2021-game-hack PDF link annotation
- https://cursocejas.com.br/imagens/userfiles/files/coin-master-hack-app_GM406889139.pdfIn PDF document text
- https://cursocejas.com.br/imagens/userfiles/files/chisel-and-bits-mod-minecraft-pe_GM479516143.pdfIn PDF document text
- https://cursocejas.com.br/imagens/userfiles/files/coin-master-free-spins-link-2021-blogger_GM406889139.pdfIn PDF document text
- https://cursocejas.com.br/imagens/userfiles/files/free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
- https://cursocejas.com.br/imagens/userfiles/files/how-to-make-free-robux_GM431946152.pdfIn PDF document text
- https://cursocejas.com.br/imagens/userfiles/files/how-to-get-roblox-premium-for-free_GM431946152.pdfIn PDF document text
- https://cursocejas.com.br/imagens/userfiles/files/how-do-i-get-robux-on-roblox_GM431946152.pdfIn PDF document text
- https://cursocejas.com.br/imagens/userfiles/files/roblox-administrator-badge-hack_GM431946152.pdfIn PDF document text
- https://cursocejas.com.br/imagens/userfiles/files/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
- https://cursocejas.com.br/imagens/userfiles/files/free-roblox-gift-card-codes-2021-unused_GM431946152.pdfIn PDF document text
- https://cursocejas.com.br/imagens/userfiles/files/free-2021-robux_GM431946152.pdfIn PDF document text
- https://cursocejas.com.br/imagens/userfiles/files/coin-master-hack-download-2021_GM406889139.pdfIn PDF document text
- https://cursocejas.com.br/imagens/userfiles/files/coin-master-free-coins_GM406889139.pdfIn PDF document text
- https://cursocejas.com.br/imagens/userfiles/files/coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://cursocejas.com.br/imagens/userfiles/files/_GM479516143.pdfIn PDF document text
- https://cursocejas.com.br/imagens/userfiles/files/hack-para-roblox-phantom-forces_GM431946152.pdfIn PDF document text
- https://cursocejas.com.br/imagens/userfiles/files/how-to-change-roblox-username-for-free_GM431946152.pdfIn PDF document text
- https://cursocejas.com.br/imagens/userfiles/files/coin-master-hack-spins-2021_GM406889139.pdfIn PDF document text
- https://cursocejas.com.br/imagens/userfiles/files/hacks-for-you-free-robux_GM431946152.pdfIn PDF document text
- https://cursocejas.com.br/imagens/userfiles/files/how-to-get-robux-for-free-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_off0000308a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x308A	22232 bytes
SHA-256: `ed0feb5845d6de770a49b9494bb438796eb31b41f247660d662e4bbca610143a`
`font_01_sfnt_off000061e6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x61E6	19780 bytes
SHA-256: `b419392eb850b29e43475b030aca4325c5225063620df97bacb0c0a363750c49`

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