PDF malware analysis — malicious · 927604728db47da8

MALICIOUS

PDF

41.2 KB Created: 2021-05-01 06:27:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-22

MD5: 0d86998638e8ab3ff204d3eac227488d SHA-1: 1b92ac77880c494d1b042aedc96baa8134d061d7 SHA-256: 927604728db47da80fe791bae4f3a0e5824813ec3eabeb6eeb98f4645e96ae40

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://netcdn.xyz/app/431946152/roblox-hack-anti-ban-game-hack PDF link annotation
- http://www.smkrekayasa-dps.sch.id/new/public/ckfinder/userfiles/files/get-robux-free-legal.pdfIn PDF document text
- http://www.smkrekayasa-dps.sch.id/new/public/ckfinder/userfiles/files/hack-app-for-roblox-pet-simulator-free-pets.pdfIn PDF document text
- http://www.smkrekayasa-dps.sch.id/new/public/ckfinder/userfiles/files/download-hacks-for-roblox-jump.pdfIn PDF document text
- http://www.smkrekayasa-dps.sch.id/new/public/ckfinder/userfiles/files/how-to-recove-hacked-account-roblox.pdfIn PDF document text
- http://www.smkrekayasa-dps.sch.id/new/public/ckfinder/userfiles/files/how-to-speed-hack-on-roblox-without-cheat-engine-2021.pdfIn PDF document text
- http://www.smkrekayasa-dps.sch.id/new/public/ckfinder/userfiles/files/how-to-hack-roblox-on-iphone-6.pdfIn PDF document text
- http://www.smkrekayasa-dps.sch.id/new/public/ckfinder/userfiles/files/hacked-assassain-roblox.pdfIn PDF document text
- http://www.smkrekayasa-dps.sch.id/new/public/ckfinder/userfiles/files/how-to-hack-roblox-database.pdfIn PDF document text
- http://www.smkrekayasa-dps.sch.id/new/public/ckfinder/userfiles/files/free-item-codes-roblox-2021.pdfIn PDF document text
- http://www.smkrekayasa-dps.sch.id/new/public/ckfinder/userfiles/files/free-robux-no-games-to-play.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_off000042de.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x42DE	26496 bytes
SHA-256: `0d6b6ddf6e81458a9a870d43bb34a9d325b2ec7c8c38c0cd1bad0d7f0adac2de`
`font_01_sfnt_off00007eb8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7EB8	18408 bytes
SHA-256: `ee39eb75c1ddea6ce4ac1e963e26542d090c49e7b14e0c0827d2e1928ee4479d`

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