PDF malware analysis — malicious · 4df2cf12eb66c37b

MALICIOUS

PDF

35.1 KB Created: 2021-07-09 02:54:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 0aba3e95823fcdcb584168b433bb0e4c SHA-1: 3062a3135e974265c5d8cda32fe3986b66f61218 SHA-256: 4df2cf12eb66c37bb8956f784e1ac8c30358a0146900e6d291dba9693821d43d

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/old-roblox-accounts-for-free-game-hack PDF link annotation
- https://loba.com.vn/public/upload/files/fazbear-free-robux-scam_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-robux-hack-us_GM431946152.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/roblox-free-card-codes-2021_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/what-game-gives-you-free-robux_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/roblox-free-neck-accessories_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/50-free-robux_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/how-to-get-free-robux-with-cheat-engine-64_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/boost9-com-roblox-hack_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/minecraft-skins-free-girl_GM479516143.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-roblox-templates_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/how-to-hack-in-roblox-2021-mac_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/coin-master-hack-twitter_GM406889139.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/gamekit-didnt-give-me-free-800-robux_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-tiktok-followers-generator_GM835599320.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/minecraft-that-you-can-play-for-free_GM479516143.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/roblox-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-clothes-roblox-youtube_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_off000030d8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x30D8	22680 bytes
SHA-256: `1856689e99a749f5449bfbd8c32fe6e34a1a67edd10d31c93c0134937a3383e9`
`font_01_sfnt_off000063ec.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x63EC	19068 bytes
SHA-256: `f5f13600f2f438e5ce12c91dd09359bed6a89aadbe705308ce4f0d1f141ce3b5`

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