PDF malware analysis — malicious · 6894b6df699bd663

MALICIOUS

PDF

34.9 KB Created: 2021-07-04 11:20:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05

MD5: 2832e9e611dd17d97ad54ae95349da79 SHA-1: 687ace885519ca2c3a5a802da9fa81dc5754ca0e SHA-256: 6894b6df699bd663291d21b3223dc601436f4e0950eb39b8200e53cde3dfa51f

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document employs a game hack lure to trick users into visiting a malicious URL. The embedded link, http://netcdn.tw/app/406889139/coin-master-sound-daily-free-spins-link-today-game-hack, is designed to redirect users to potentially harmful content. The ML classifier strongly indicated maliciousness, and the PDF's structure and content align with social engineering tactics.

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/406889139/coin-master-sound-daily-free-spins-link-today-game-hack PDF link annotation
- https://loba.com.vn/public/upload/files/free-spins-coin-master-app_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/how-to-get-roebucks-on-roblox_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-tiktok-accounts_GM835599320.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/minecraft-redeem-code-free_GM479516143.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/roblox-hack-that-realy-works_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-spin-and-coin-blogspot_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/best-free-minecraft-skins_GM479516143.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/top-free-commands-in-roblox-without-admin_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/how-to-get-minecraft-bedrock-for-free-with-java_GM479516143.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/pokediger1-robux-codes-free-secret_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/roblox-speed-hack-2021-may_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/robux-hack-no-verification_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/how-to-be-a-builders-club-in-roblox-free_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/roblox-free-accounts-pastebin_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-roblox-promo-numbers_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/how-to-get-free-robux-fast-and-easy_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/coin-master-35-2-hack_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/how-to-hack-coin-master-android_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_off00003189.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3189	22340 bytes
SHA-256: `acdc1538394126628672cccb74e45461e218b177229cdad770eaf42f34296adb`
`font_01_sfnt_off00006332.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6332	19080 bytes
SHA-256: `3cbc293ef628fb4705ac7f66d217295b20ff5e8f6a59663341d656d2499a7cc6`

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