PDF malware analysis — malicious · 496fce052f3953b4

MALICIOUS

PDF

33.7 KB Created: 2021-07-05 09:36:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 9c539f13e0bc1a7a95cd65db87f12f46 SHA-1: 5659cf14a7f5d376f3c1597edde8cc26acce8a48 SHA-256: 496fce052f3953b41cdbf8b9ab3a5f6db776d17e560e8bf8650b81499165e504

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/free-robux-no-email-game-hack PDF link annotation
- https://cosmosocean.com.tw/upload/files/how-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/minecraft-auto-miner-hack_GM479516143.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/free-robux-new-logo_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/coin-master-free-cards_GM406889139.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/free-robux-card-codes_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/play-full-version-of-minecraft-for-free-no-download_GM479516143.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/roblox-guess-that-song-rap-and-pop-cheat-sheet_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/hack-coin-master-using-pc_GM406889139.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/free-robux-codes-2021-july_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/free-games-like-minecraft_GM479516143.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/how-dto-hack-in-to-robloxs-account_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/robuxy-com-generator_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/descargar-hack-deathrun-roblox-super-speed_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/cheat-engine-hack-in-roblox-high-school_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/coin-master-hack-apk-download-for-android_GM406889139.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/roblox-free-items-promo-codes_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/roblox-free-robux-com_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/easiest-character-to-make-an-roblox-account-for-free_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_off00002e93.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2E93	21756 bytes
SHA-256: `84649582b8bad41c886cf3b2bdcd98129f1395d1d0e7239738b524896d5c6547`
`font_01_sfnt_off00005e5d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5E5D	19168 bytes
SHA-256: `e6feb406b33ce3eed24c310326ea9a59558e0a782f86ce6eecd6a3cca8ccef3d`

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