PDF malware analysis — malicious · 4beb5c200b334c2b

MALICIOUS

PDF

43.9 KB Created: 2021-05-17 05:00:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01

MD5: cea31848f9b8554c555cf2f740bf7893 SHA-1: 81971484f5bf2df3269999a0334a687478e84e9b SHA-256: 4beb5c200b334c2b84954ecf74f8f36864c280b928a1e021b9ba5c7c2a977555

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 0.9969

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/minecraft-bedrock-hacks-windows-10-game-hack PDF link annotation
- https://foc.vn/public/upload/files/coin-master-free-coins-link_GM406889139.pdfIn PDF document text
- https://foc.vn/public/upload/files/coin-master-hack-apk-35-18_GM406889139.pdfIn PDF document text
- https://foc.vn/public/upload/files/roblox-avatar-maker-free_GM431946152.pdfIn PDF document text
- https://foc.vn/public/upload/files/where-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://foc.vn/public/upload/files/free-spin-coin-master-2021_GM406889139.pdfIn PDF document text
- https://foc.vn/public/upload/files/how-to-hack-peoples-roblox-accounts_GM431946152.pdfIn PDF document text
- https://foc.vn/public/upload/files/how-to-make-free-robux_GM431946152.pdfIn PDF document text
- https://foc.vn/public/upload/files/show-me-how-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://foc.vn/public/upload/files/www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
- https://foc.vn/public/upload/files/free-realistic-minecraft-texture-packs_GM479516143.pdfIn PDF document text
- https://foc.vn/public/upload/files/microsoft-rewards-robux_GM431946152.pdfIn PDF document text
- https://foc.vn/public/upload/files/free-robux-with-no-verification-2021_GM431946152.pdfIn PDF document text
- https://foc.vn/public/upload/files/hack-coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://foc.vn/public/upload/files/coin-master-hacks-xyz_GM406889139.pdfIn PDF document text
- https://foc.vn/public/upload/files/coin-master-hack-xyz-2021_GM406889139.pdfIn PDF document text
- https://foc.vn/public/upload/files/hack-coin-master-no-survey_GM406889139.pdfIn PDF document text
- https://foc.vn/public/upload/files/coin-master-free-blogspot_GM406889139.pdfIn PDF document text
- https://foc.vn/public/upload/files/hacks-for-minecraft-windows-10_GM479516143.pdfIn PDF document text
- https://foc.vn/public/upload/files/coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
- https://foc.vn/public/upload/files/minecraft-pe-016-0-apk-download-free_GM479516143.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
`stream_003_off00004f05.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4F05	25280 bytes
SHA-256: `49a97caf9686741edba0db89d5aab25b99a4dd952f831b981ad48bdd907ad755`
`font_01_sfnt_off00008798.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8798	18908 bytes
SHA-256: `18cbca0e50f7f5b28a778cfbd569d1baac665ff56cf18fe3f86cb3ac4da3e820`

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