PDF malware analysis — malicious · 5fea42b6d8ca311d

MALICIOUS

PDF

56.8 KB Created: 2021-06-03 08:41:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24

MD5: 1d01225a1c55895f6bbf9d583f111e56 SHA-1: 7eee23f6ce2a7972c1ee549d14477d438c1617af SHA-256: 5fea42b6d8ca311d050a8a100f645a916bccac52c29b1802f7fd0a2308d6bac4

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 0.9717

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.online/app/431946152/cheat-roblox-sound-game-hack PDF link annotation
- https://www.legclub.org/uploads/files/files/how-can-i-play-minecraft-for-free_GM479516143.pdfIn PDF document text
- https://www.legclub.org/uploads/files/files/roblox-studio-free-robux_GM431946152.pdfIn PDF document text
- https://www.legclub.org/uploads/files/files/free-minecraft-generator_GM479516143.pdfIn PDF document text
- https://www.legclub.org/uploads/files/files/free-robux-codes-generator-no-verification_GM431946152.pdfIn PDF document text
- https://www.legclub.org/uploads/files/files/free-unlimited-coin-master-400-spin-link_GM406889139.pdfIn PDF document text
- https://www.legclub.org/uploads/files/files/minecraft-svg-free_GM479516143.pdfIn PDF document text
- https://www.legclub.org/uploads/files/files/minecraft-pe-hacks_GM479516143.pdfIn PDF document text
- https://www.legclub.org/uploads/files/files/free-robux-no-verification-at-all_GM431946152.pdfIn PDF document text
- https://www.legclub.org/uploads/files/files/coin-master-free-spins-promo-code_GM406889139.pdfIn PDF document text
- https://www.legclub.org/uploads/files/files/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
- https://www.legclub.org/uploads/files/files/free-robux-gift-card-codes_GM431946152.pdfIn PDF document text
- https://www.legclub.org/uploads/files/files/how-to-get-free-roblox_GM431946152.pdfIn PDF document text
- https://www.legclub.org/uploads/files/files/coin-master-free-coins-and-spins-link_GM406889139.pdfIn PDF document text
- https://www.legclub.org/uploads/files/files/minecraft-tools_GM479516143.pdfIn PDF document text
- https://www.legclub.org/uploads/files/files/minecraft-education-free_GM479516143.pdfIn PDF document text
- https://www.legclub.org/uploads/files/files/coin-master-cheat-apk-free-download_GM406889139.pdfIn PDF document text
- https://www.legclub.org/uploads/files/files/free-coin-master-spins-blogger_GM406889139.pdfIn PDF document text
- https://www.legclub.org/uploads/files/files/how-to-get-free-skins-on-coin-master_GM406889139.pdfIn PDF document text
- https://www.legclub.org/uploads/files/files/rbxfree-com-free-robux_GM431946152.pdfIn PDF document text
- https://www.legclub.org/uploads/files/files/free-robux-com-roblox_GM431946152.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_004_off0000546d.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x546D	27484 bytes
SHA-256: `21236ebf6333747ea309e74273c2dc1e5f5e307ee5092159320470ae7c960a2d`
`font_01_sfnt_off00009303.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9303	12860 bytes
SHA-256: `bad61ca270e6494488663b17b8a9bed7a58516ba292f4e9d5d09880fcebf96d9`
`font_02_sfnt_off0000bb10.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xBB10	18596 bytes
SHA-256: `9c4f6c19dbe1ef210d87b90fc5889a3a6c288d177d5bb02619eadf1785289bee`

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