PDF malware analysis — malicious · cc5545b5dfe23d8c

MALICIOUS

PDF

33.8 KB Created: 2021-07-06 07:56:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04

MD5: 3266fee68c4b8d2e873b22b93732d8a4 SHA-1: f6a0e60e4b4e9454889262da8681c62304967e92 SHA-256: cc5545b5dfe23d8c5ec1ad836f08eaa9b1ab741e543ea3c2000f376161ea490a

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/431946152/how-you-get-free-robux-game-hack PDF link annotation
- https://loba.com.vn/public/upload/files/install-free-game-coin-master_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/earn-points-for-robux_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-robux-gfames-that-dont-take-password_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/roblox-hacking-gameq_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/codes-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/roblox-hack-mod-windows-7_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/earn-free-robux-by-completing-offers-and-surveys_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/omg-this-worked-how-to-get-1-million-free-robux_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/hack-de-roblox-volar_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/minecraft-free-download-ios_GM479516143.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/how-much-robux-can-you-get-with-1-million-dollars_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-robux-promo-codes-list-2021_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/minecraft-bedrock-server-hosting-free_GM479516143.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/robux-script-hack-2021_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/coins-master-hacks_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/surveytool-free-robux_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-coins-for-flip-master_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/roblox-shinobi-life-free-spins-2021_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-spins-and-coins-on-coin-master_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_off00002e78.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2E78	21976 bytes
SHA-256: `b63be6082c07ba7b1f85f84da6fc09b831e588151332b3c24ba1e3623820e08d`
`font_01_sfnt_off00005ecb.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5ECB	19144 bytes
SHA-256: `347a02abbc70d9a51f290361347438ae6cbd927e0a0fbf4b37ccbc96466cb725`

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