PDF malware analysis — malicious · 82fb694dc429fdd4

MALICIOUS

PDF

46.5 KB Created: 2021-06-03 15:15:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01

MD5: 25994b25c283b333c8f43ed9cb99fdce SHA-1: bbfcaa95e577b27630e2588d73f6119e9fd7b3d1 SHA-256: 82fb694dc429fdd4dc312f9f6a319bb1be3927e70b3fa36dbd1a34571e6216b9

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 0.9832

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/roblox-hack-client-game-hack PDF link annotation
- https://www.jcn.co.uk/uploads/files/files/minecraft-pe-apk_GM479516143.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/rbxfree-com-free-robux_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/microsoft-rewards-robux_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/minecraft-windows-10-edition-free-with-java_GM479516143.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/spin-and-coin-link_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/coin-master-hack-pc-cheat-engine_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/minecraft-games-free-to-play-online_GM479516143.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/coin-master-free-rare-cards_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/free-daily-spins-and-coins-for-coin-master_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/robux-gift-card-free_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/coin-master-free-spin-no-offers_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/coin-master-daily-free-spins-link-march-2021_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/coin-master-free-cards-hack_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/how-to-get-free-roblox_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/coin-master-35-16-hack-apk_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/how-to-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/coin-master-spin-link-hack_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/minecraft-free-download-chromebook_GM479516143.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/coin-master-free-spin-and-coin_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
`stream_004_off00005252.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x5252	28152 bytes
SHA-256: `4f3336f35d260bf2da3f7471eb3ef9eb4534ed5d243bd80665ab89e3df1af9e7`
`font_01_sfnt_off000092cd.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x92CD	18408 bytes
SHA-256: `550f62bb1f49814ef42b1b735b63b4edf215944f9d7482118736a3d91d594bfc`

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