PDF malware analysis — malicious · 6c7872396d06b68a

MALICIOUS

PDF

34.9 KB Created: 2021-06-30 03:35:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 1a77513ff937f16fe04b52e61239b36e SHA-1: e1c307254aed5431a17933b4c64746d74a566b48 SHA-256: 6c7872396d06b68a89d62888f21a17a2876d4cc4aff588b61d6a90a0e45c33fc

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF file contains a lure for free game hacks, specifically mentioning Roblox and Coin Master, directing users to a suspicious URL. The ML classifier strongly indicates maliciousness. The embedded URL is designed to trick users into downloading potentially harmful content or visiting a phishing site.

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/brixton-south-london-free-roblox-game-hack PDF link annotation
- https://cursocejas.com.br/imagens/userfiles/files/free-coins-2021-coin-master-link_GM406889139.pdfIn PDF document text
- https://cursocejas.com.br/imagens/userfiles/files/free-robux-that-actually-works_GM431946152.pdfIn PDF document text
- https://cursocejas.com.br/imagens/userfiles/files/coin-master-hack-for-android_GM406889139.pdfIn PDF document text
- https://cursocejas.com.br/imagens/userfiles/files/free-minecraft-alts_GM479516143.pdfIn PDF document text
- https://cursocejas.com.br/imagens/userfiles/files/win-free-robux_GM431946152.pdfIn PDF document text
- https://cursocejas.com.br/imagens/userfiles/files/best-roblox-hacks_GM431946152.pdfIn PDF document text
- https://cursocejas.com.br/imagens/userfiles/files/free-bird-roblox-id_GM431946152.pdfIn PDF document text
- https://cursocejas.com.br/imagens/userfiles/files/roblox-free-clothes-girl_GM431946152.pdfIn PDF document text
- https://cursocejas.com.br/imagens/userfiles/files/how-to-speed-hack-in-swordburst-2-in-roblox-2021_GM431946152.pdfIn PDF document text
- https://cursocejas.com.br/imagens/userfiles/files/free-robux-hack_GM431946152.pdfIn PDF document text
- https://cursocejas.com.br/imagens/userfiles/files/free-robux-live_GM431946152.pdfIn PDF document text
- https://cursocejas.com.br/imagens/userfiles/files/coin-master-hack-2021_GM406889139.pdfIn PDF document text
- https://cursocejas.com.br/imagens/userfiles/files/coin-master-35-2-hack_GM406889139.pdfIn PDF document text
- https://cursocejas.com.br/imagens/userfiles/files/roblox-card-free-codes-2021_GM431946152.pdfIn PDF document text
- https://cursocejas.com.br/imagens/userfiles/files/coin-master-hack-version-download-2021-android_GM406889139.pdfIn PDF document text
- https://cursocejas.com.br/imagens/userfiles/files/150-free-spins-coin-master_GM406889139.pdfIn PDF document text
- https://cursocejas.com.br/imagens/userfiles/files/roblox-admin-hack-download-2021_GM431946152.pdfIn PDF document text
- https://cursocejas.com.br/imagens/userfiles/files/roblox-lumber-tycoon-2-free-vip-server_GM431946152.pdfIn PDF document text
- https://cursocejas.com.br/imagens/userfiles/files/script-hack-robox-robux_GM431946152.pdfIn PDF document text
- https://cursocejas.com.br/imagens/userfiles/files/free-robux_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_off0000308e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x308E	22460 bytes
SHA-256: `4777210f21d5d13feb80f45a708ad07384cea9e7aab750b0b5b4d211d65fd606`
`font_01_sfnt_off00006267.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6267	19352 bytes
SHA-256: `b7e481c3d8ac0e4bd83c6c67baabd2a6b2bbda18dc225d4f8f33b97dde6ecc44`

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