PDF malware analysis — malicious · 250e94c545293aef

MALICIOUS

PDF

46.4 KB Created: 2021-05-17 18:50:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24

MD5: e8403af72f1d249929a6092f78a6da03 SHA-1: 6cd026288d7bc2bff727a831821734b7d2622f6f SHA-256: 250e94c545293aef61ea7ac2d7894c6c37dea855a96bca65407145b56902b716

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 0.8948

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 https://netcdn.xyz/app/479516143/free-minecraft-shaders-game-hack PDF link annotation
- https://www.croydex.com/uploads/files/files/_GM479516143.pdfIn PDF document text
- https://www.croydex.com/uploads/files/files/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.croydex.com/uploads/files/files/how-to-gain-more-spins-on-coin-master-for-free_GM406889139.pdfIn PDF document text
- https://www.croydex.com/uploads/files/files/roblox-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
- https://www.croydex.com/uploads/files/files/coin-master-unlimited-spin-hack-mod-apk_GM406889139.pdfIn PDF document text
- https://www.croydex.com/uploads/files/files/coin-master-free-spins-and-coins-for-today_GM406889139.pdfIn PDF document text
- https://www.croydex.com/uploads/files/files/coin-master-daily-free-spin-app_GM406889139.pdfIn PDF document text
- https://www.croydex.com/uploads/files/files/como-hackear-coin-master-2021-espaol_GM406889139.pdfIn PDF document text
- https://www.croydex.com/uploads/files/files/free-roblox-acc_GM431946152.pdfIn PDF document text
- https://www.croydex.com/uploads/files/files/coin-master-hack-programers_GM406889139.pdfIn PDF document text
- https://www.croydex.com/uploads/files/files/robux-for-offers_GM431946152.pdfIn PDF document text
- https://www.croydex.com/uploads/files/files/robux-generator-2021_GM431946152.pdfIn PDF document text
- https://www.croydex.com/uploads/files/files/earn-robux_GM431946152.pdfIn PDF document text
- https://www.croydex.com/uploads/files/files/minecraft-java-free-download_GM479516143.pdfIn PDF document text
- https://www.croydex.com/uploads/files/files/download-coin-master-hack-apk_GM406889139.pdfIn PDF document text
- https://www.croydex.com/uploads/files/files/free-links-coin-master_GM406889139.pdfIn PDF document text
- https://www.croydex.com/uploads/files/files/roblox-adopt-me-hack_GM431946152.pdfIn PDF document text
- https://www.croydex.com/uploads/files/files/coin-master-daily-free-spins-link-today-haktuts_GM406889139.pdfIn PDF document text
- https://www.croydex.com/uploads/files/files/minecraft-wurst-hacked-client_GM479516143.pdfIn PDF document text
- https://www.croydex.com/uploads/files/files/hack-coin-master-for-free_GM406889139.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_003_off00004dff.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4DFF	26912 bytes
SHA-256: `cc1cad350c413996df9df20557d88d0f11eb748b6c38d7bdc29558274505d6b2`
`font_01_sfnt_off00008acc.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8ACC	2820 bytes
SHA-256: `972979c3a46100cf5f8fd289bc6fbd2496ff75fec0e3f6753648c72ec6eba714`
`font_02_sfnt_off0000946b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x946B	17908 bytes
SHA-256: `35d3f4bf4307bd8a3f315663bc97638986f3fc82832bfbc69b2a41c23e708d7a`

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