PDF malware analysis — malicious · 8934d5f12c5b7eb6

MALICIOUS

PDF

35.7 KB Created: 2021-07-04 04:35:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05

MD5: cea5069c76a26ca78bdb4bca95921d61 SHA-1: ca04a4e89b3da55ff4ffa1f038a49eea992b113e SHA-256: 8934d5f12c5b7eb6a2bd5458b8ad937e3b6d4dd7fa6fbdbe0ee56b48b4cf1d28

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document contains a lure for 'free Robux' and game hacks, directing users to the URL http://netcdn.tw/app/431946152/free-robux-obby-game-hack. The ML classifier also flagged this PDF as malicious with high confidence. The document's content and embedded URI strongly suggest a phishing or scam attempt, likely to deliver a secondary payload or lead to further malicious activity.

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/free-robux-obby-game-hack PDF link annotation
- https://www.orbai.ai/uploaded_files/userfiles/files/survivor-hack-scrip-t-roblox_GM431946152.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/where-can-i-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/op-rewards-free-robux_GM431946152.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/free-robux-com-roblox_GM431946152.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/how-to-hack-roblox-accounts-v3rmillion_GM431946152.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/twitter-coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/when-tiktok-free-download_GM835599320.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/assassin-roblox-codes-2021-october-free-exotic_GM431946152.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/roblox-hacks-mad-city-script_GM431946152.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/roblox-free-vip-server_GM431946152.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/coin-master-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/give-me-free-robux_GM431946152.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/coin-master-hack-without-human-verification-india_GM406889139.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/roblox-studio-how-to-make-a-free-robux-game_GM431946152.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/hacker-clothes-on-roblox_GM431946152.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/minecraft-114-4-download-free_GM479516143.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/how-do-u-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/how-to-get-free-roblox-hacks_GM431946152.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/coin-master-free-spins-heaven_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_off00003434.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3434	22688 bytes
SHA-256: `3dbae6bdf477254385c1ed195d4d49f5d937dc29c6a3bd9f6ff68da8b25976e6`
`font_01_sfnt_off000066e3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x66E3	18896 bytes
SHA-256: `6e9f00f662c7d21a362c6f4977b25baee64ea5d1b6302ee915ad89b263504de8`

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