PDF malware analysis — malicious · 4ac5482ef2bf5a14

MALICIOUS

PDF

35.0 KB Created: 2021-06-29 07:41:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 04fb2d4ed961a5bab04b863cc61479fc SHA-1: 25ed570dff79c5702de86d562d4a2231330ba77e SHA-256: 4ac5482ef2bf5a14418c0fa504c1407dc5612e1b8f00c77e32a9833a63bcf2b2

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document contains a lure for free game hacks, specifically mentioning Roblox, and directs users to a URL that is flagged as malicious. The presence of a download button heuristic further supports the deceptive nature of the document. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest it is designed to redirect users to a potentially harmful site for further exploitation.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/roblox-play-as-guest-for-free-game-hack PDF link annotation
- https://kultura.orb.ru/uploads/ckfinder/userfiles/files/free-robux-no-survey-or-human-verification_GM431946152.pdfIn PDF document text
- https://kultura.orb.ru/uploads/ckfinder/userfiles/files/minecraft-free-android_GM479516143.pdfIn PDF document text
- https://kultura.orb.ru/uploads/ckfinder/userfiles/files/coin-master-free-spins-and-coins-blogspot_GM406889139.pdfIn PDF document text
- https://kultura.orb.ru/uploads/ckfinder/userfiles/files/coin-and-spin_GM406889139.pdfIn PDF document text
- https://kultura.orb.ru/uploads/ckfinder/userfiles/files/guide--coin-master-free-tips_GM406889139.pdfIn PDF document text
- https://kultura.orb.ru/uploads/ckfinder/userfiles/files/minecraft-hack-client-download_GM479516143.pdfIn PDF document text
- https://kultura.orb.ru/uploads/ckfinder/userfiles/files/how-to-get-free-roblox-money_GM431946152.pdfIn PDF document text
- https://kultura.orb.ru/uploads/ckfinder/userfiles/files/bloxpage-free-robux_GM431946152.pdfIn PDF document text
- https://kultura.orb.ru/uploads/ckfinder/userfiles/files/game-give-free-robux_GM431946152.pdfIn PDF document text
- https://kultura.orb.ru/uploads/ckfinder/userfiles/files/coin-master-daily-free-spins-blog_GM406889139.pdfIn PDF document text
- https://kultura.orb.ru/uploads/ckfinder/userfiles/files/coin-master-free-spins-generator-no-verification_GM406889139.pdfIn PDF document text
- https://kultura.orb.ru/uploads/ckfinder/userfiles/files/mac-hacks-for-roblox_GM431946152.pdfIn PDF document text
- https://kultura.orb.ru/uploads/ckfinder/userfiles/files/how-to-get-free-spins-in-coin-master-2021_GM406889139.pdfIn PDF document text
- https://kultura.orb.ru/uploads/ckfinder/userfiles/files/coinmaster-spin-ml_GM406889139.pdfIn PDF document text
- https://kultura.orb.ru/uploads/ckfinder/userfiles/files/download-hack-coin-master-apk_GM406889139.pdfIn PDF document text
- https://kultura.orb.ru/uploads/ckfinder/userfiles/files/how-to-get-free-stuff-for-your-avatar-in-roblox_GM431946152.pdfIn PDF document text
- https://kultura.orb.ru/uploads/ckfinder/userfiles/files/free-mod-apk-coin-master_GM406889139.pdfIn PDF document text
- https://kultura.orb.ru/uploads/ckfinder/userfiles/files/hack-coin-master-apk-31_GM406889139.pdfIn PDF document text
- https://kultura.orb.ru/uploads/ckfinder/userfiles/files/coin-spin-link_GM406889139.pdfIn PDF document text
- https://kultura.orb.ru/uploads/ckfinder/userfiles/files/how-do-i-get-robux-on-roblox_GM431946152.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_002_off0000311f.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x311F	22408 bytes
SHA-256: `6a1f43d35e3e6c85d6424f1d61153369b148d044e5830c3da260dafd84802144`
`font_01_sfnt_off00006337.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6337	19228 bytes
SHA-256: `f182d4e7245a356d52ce44b407901f976493b24ead77f7030579fea83c11a077`

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