PDF malware analysis — malicious · 733f5c4b3179efcf

MALICIOUS

PDF

33.6 KB Created: 2021-06-19 00:58:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24

MD5: 0a5c79712face7e746ce0abee67c5006 SHA-1: e6fcb70cf39c7cfaf32c4f27b10874c9d04008c1 SHA-256: 733f5c4b3179efcf36a6f96089f01b6aae4d06eea84297aad76f9085044855c5

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/roblox-dbor-hack-game-hack PDF link annotation
- https://loba.com.vn/public/upload/files/roblox-font-free_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/hack-coin-master-apk-32-download_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-2021-robux_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/robux-free-c_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-robux-code-cards-website_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/rbx-website_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/can-you-hack-roblox-accounts_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-robux-offer-wall_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/how-to-get-free-robux-2021-ipad_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/coin-master-card-collection-hack-apk_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-robux-master_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/spin-rewards-coin-master_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/how-to-make-a-private-server-on-roblox-for-free_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/safe-free-robux-no-password-or-human-verification_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/how-to-cheat-at-roblox_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_off00002ec1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2EC1	21828 bytes
SHA-256: `a56e4e07c1cfbac4bb992a32dbff27379f39b3a807b92ec0268d04eb2b1692ab`
`font_01_sfnt_off00005e9f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5E9F	18824 bytes
SHA-256: `735e8d51326cb0625e622741db4f3bdfe8da6c5ef223855c1505e8d5fad7bdbc`

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