PDF malware analysis — malicious · c62725cb7db66bfa

MALICIOUS

PDF

33.8 KB Created: 2021-07-07 11:25:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: e686e07cb682f060fde11fb26424a3c0 SHA-1: 1881da41b576afe69daad68b4a514a57bdd1689d SHA-256: c62725cb7db66bfa88527ff4cfdd4e15938fc90d1413902509446bc00d03b73a

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/479516143/what-is-a-minecraft-client-game-hack PDF link annotation
- https://www.ruchya.com.tw/upload/files/roblox-font-generator-free_GM431946152.pdfIn PDF document text
- https://www.ruchya.com.tw/upload/files/minecraft-apk-android-free_GM479516143.pdfIn PDF document text
- https://www.ruchya.com.tw/upload/files/minecraft-pe-015-0-apk-free-download_GM479516143.pdfIn PDF document text
- https://www.ruchya.com.tw/upload/files/minecraft-free-android_GM479516143.pdfIn PDF document text
- https://www.ruchya.com.tw/upload/files/how-to-get-free-coins-on-tiktok_GM835599320.pdfIn PDF document text
- https://www.ruchya.com.tw/upload/files/roblox-mobile-hack_GM431946152.pdfIn PDF document text
- https://www.ruchya.com.tw/upload/files/moonactive-free-spins-link_GM406889139.pdfIn PDF document text
- https://www.ruchya.com.tw/upload/files/cheats-for-mm2-roblox_GM431946152.pdfIn PDF document text
- https://www.ruchya.com.tw/upload/files/free-robux-generator-2021-no-human-verification_GM431946152.pdfIn PDF document text
- https://www.ruchya.com.tw/upload/files/coin-master-daily-free-spins-link-facebook_GM406889139.pdfIn PDF document text
- https://www.ruchya.com.tw/upload/files/free-coins-and-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
- https://www.ruchya.com.tw/upload/files/coin-master-hack-spin-ios_GM406889139.pdfIn PDF document text
- https://www.ruchya.com.tw/upload/files/free-roblox-codes-for-robux-2021_GM431946152.pdfIn PDF document text
- https://www.ruchya.com.tw/upload/files/tiradas-coin-master_GM406889139.pdfIn PDF document text
- https://www.ruchya.com.tw/upload/files/coin-master-on-facebook_GM406889139.pdfIn PDF document text
- https://www.ruchya.com.tw/upload/files/if-i-uninstall-minecraft-can-i-reinstall-it-for-free_GM479516143.pdfIn PDF document text
- https://www.ruchya.com.tw/upload/files/howto-find-people-ingame-in-roblox-cheat_GM431946152.pdfIn PDF document text
- https://www.ruchya.com.tw/upload/files/free-roblox-adopt-me-accounts_GM431946152.pdfIn PDF document text
- https://www.ruchya.com.tw/upload/files/minecraft-free-apk_GM479516143.pdfIn PDF document text
- https://www.ruchya.com.tw/upload/files/coin-master-free-spins-hack_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_off00002fce.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2FCE	22316 bytes
SHA-256: `b639e3f5f8fee57bd0d0a3da8183259bf71ad57a777e13fe43491131f4090d5b`
`font_01_sfnt_off00006166.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6166	18292 bytes
SHA-256: `cc8de4d5cd269b7874ace7bd1df7c96e4a27e52416941d0a4b2fd16f13afc98a`

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