PDF malware analysis — malicious · d392a09b21ef74f7

MALICIOUS

PDF

39.6 KB Created: 2021-04-23 14:59:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-22

MD5: f6f5ac351ab130d9d60d38b4babc255f SHA-1: aa56818cc6d1ff8c3ee17d4cdc2faf8fe3201347 SHA-256: d392a09b21ef74f786a40bbbb75b9809759345e2526155354fea13766a28469e

122 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by an ML classifier. It uses a fake browser/software-install lure. 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 0.9941

Heuristics 5

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.
Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE

Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
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://netsecure.top/app/431946152/roblox-mobile-hack-ios-game-hack PDF link annotation
- https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/roblox-the-pizzeria-rp-remastered-coins-hack.pdfIn PDF document text
- https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/roblox-building-hacker-gegen.pdfIn PDF document text
- https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/free-codes-for-robloxcomtoys.pdfIn PDF document text
- https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/free-kids-games-for-girls-roblox.pdfIn PDF document text
- https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/free-robux-ios.pdfIn PDF document text
- https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/free-roblox-items-2021.pdfIn PDF document text
- https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/como-hackear-roblox-sin-descargar-nada.pdfIn PDF document text
- https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/hack-de-roblox-dinero-rozitizens.pdfIn PDF document text
- https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/dragon-ball-af-roblox-cheats.pdfIn PDF document text
- https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/free-robux-by-watching-videos.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_off00003fdd.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x3FDD	24956 bytes
SHA-256: `a8c25ca111f2278e47f9ae8b4bc5bf1202ae305543cef837e28ce7cd592300c6`
`font_01_sfnt_off00007848.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7848	18500 bytes
SHA-256: `9a133c9a3183179839b877da66c5f5b84959f6afbe2947683070aa60cbc5666f`

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