PDF malware analysis — malicious · 2ca917ae493b5d15

MALICIOUS

PDF

34.6 KB Created: 2021-06-27 19:13:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24

MD5: 83a5ab3a27a4849094376118b24e4823 SHA-1: ae9f40f9949ce8758e7c1067a87402f8e3015a89 SHA-256: 2ca917ae493b5d15abffe11823844ef2c8b80b4e4f07ee41256f74d4e0bf7e7a

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/script-lua-hack-roblox-game-hack PDF link annotation
- https://cursocejas.com.br/imagens/userfiles/files/coin-master-gold-cards-hack_GM406889139.pdfIn PDF document text
- https://cursocejas.com.br/imagens/userfiles/files/free-exploits-for-roblox_GM431946152.pdfIn PDF document text
- https://cursocejas.com.br/imagens/userfiles/files/websites-that-give-free-robux_GM431946152.pdfIn PDF document text
- https://cursocejas.com.br/imagens/userfiles/files/free-robux-no-verification-no-download_GM431946152.pdfIn PDF document text
- https://cursocejas.com.br/imagens/userfiles/files/free-avatar-roblox_GM431946152.pdfIn PDF document text
- https://cursocejas.com.br/imagens/userfiles/files/tiktok-free-key-code_GM835599320.pdfIn PDF document text
- https://cursocejas.com.br/imagens/userfiles/files/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
- https://cursocejas.com.br/imagens/userfiles/files/free-robux-2021-no-verification_GM431946152.pdfIn PDF document text
- https://cursocejas.com.br/imagens/userfiles/files/coin-master-hack-tool-v1-9-download-free-pc_GM406889139.pdfIn PDF document text
- https://cursocejas.com.br/imagens/userfiles/files/free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
- https://cursocejas.com.br/imagens/userfiles/files/free-links-for-free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
- https://cursocejas.com.br/imagens/userfiles/files/free-roblox-on-computo_GM431946152.pdfIn PDF document text
- https://cursocejas.com.br/imagens/userfiles/files/coin-master-free-card-link-today_GM406889139.pdfIn PDF document text
- https://cursocejas.com.br/imagens/userfiles/files/how-to-get-800-robux-for-free_GM431946152.pdfIn PDF document text
- https://cursocejas.com.br/imagens/userfiles/files/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
- https://cursocejas.com.br/imagens/userfiles/files/toolbox-premium-apk_GM479516143.pdfIn PDF document text
- https://cursocejas.com.br/imagens/userfiles/files/gamehunters-club-coin-master_GM406889139.pdfIn PDF document text
- https://cursocejas.com.br/imagens/userfiles/files/free-robux-no-password-or-human-verification_GM431946152.pdfIn PDF document text
- https://cursocejas.com.br/imagens/userfiles/files/coin-master-daily-free-coins-link_GM406889139.pdfIn PDF document text
- https://cursocejas.com.br/imagens/userfiles/files/free-tiktok-followers-without-verification_GM835599320.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_off0000307a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x307A	22244 bytes
SHA-256: `8d3f8603de07184d36de14930932025bbca78ae7f07e621f20bc9ff4ad8224e2`
`font_01_sfnt_off000061d8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x61D8	19196 bytes
SHA-256: `7710aa38139595e22e5fbd7953f435a3edcb3a9a9263be6769dfeabdc8637468`

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