PDF malware analysis — malicious · 069bb66d41b26ac9

MALICIOUS

PDF

33.8 KB Created: 2021-07-09 07:46:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 4a4d28c49866c4a865a3543f6be80233 SHA-1: b9cd66cfa08e434e23d6065d8d60eb06f7995e85 SHA-256: 069bb66d41b26ac9527110c8ab7d024956b0cac6e50222a310c545c57d8a809b

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 0.9980

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.tw/app/431946152/free-robux-website-game-hack PDF link annotation
- https://lojasdoescritorio.com.br/ckfinder/userfiles/files/brickmaster2021-free-robux_GM431946152.pdfIn PDF document text
- https://lojasdoescritorio.com.br/ckfinder/userfiles/files/coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
- https://lojasdoescritorio.com.br/ckfinder/userfiles/files/coin-master-link_GM406889139.pdfIn PDF document text
- https://lojasdoescritorio.com.br/ckfinder/userfiles/files/coin-master-daily-free-spins_GM406889139.pdfIn PDF document text
- https://lojasdoescritorio.com.br/ckfinder/userfiles/files/free-likes-on-tiktok-no-verification_GM835599320.pdfIn PDF document text
- https://lojasdoescritorio.com.br/ckfinder/userfiles/files/wizard-hacks_GM479516143.pdfIn PDF document text
- https://lojasdoescritorio.com.br/ckfinder/userfiles/files/lazyblocks-com-robux_GM431946152.pdfIn PDF document text
- https://lojasdoescritorio.com.br/ckfinder/userfiles/files/coin-master-free-cards_GM406889139.pdfIn PDF document text
- https://lojasdoescritorio.com.br/ckfinder/userfiles/files/coin-master-hack-programers_GM406889139.pdfIn PDF document text
- https://lojasdoescritorio.com.br/ckfinder/userfiles/files/daily-free-spin-coin-master-link_GM406889139.pdfIn PDF document text
- https://lojasdoescritorio.com.br/ckfinder/userfiles/files/zyrus-roblox-hack_GM431946152.pdfIn PDF document text
- https://lojasdoescritorio.com.br/ckfinder/userfiles/files/roblox-jailbreak-hack-installer_GM431946152.pdfIn PDF document text
- https://lojasdoescritorio.com.br/ckfinder/userfiles/files/how-to-get-roebucks_GM431946152.pdfIn PDF document text
- https://lojasdoescritorio.com.br/ckfinder/userfiles/files/coin-master-daily-free-link_GM406889139.pdfIn PDF document text
- https://lojasdoescritorio.com.br/ckfinder/userfiles/files/roblox-cheat-engine-feb-2021_GM431946152.pdfIn PDF document text
- https://lojasdoescritorio.com.br/ckfinder/userfiles/files/a-hacker-on-roblox_GM431946152.pdfIn PDF document text
- https://lojasdoescritorio.com.br/ckfinder/userfiles/files/how-to-make-clothes-for-free-in-roblox_GM431946152.pdfIn PDF document text
- https://lojasdoescritorio.com.br/ckfinder/userfiles/files/roblox-hacks-for-mad-city_GM431946152.pdfIn PDF document text
- https://lojasdoescritorio.com.br/ckfinder/userfiles/files/coin-master-free-spins-link-fb_GM406889139.pdfIn PDF document text
- https://lojasdoescritorio.com.br/ckfinder/userfiles/files/cheat-buddy-roblox-scripts_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
`font_00_sfnt_off00002daf.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2DAF	22056 bytes
SHA-256: `8e333c294622d083b2f52e7aad1bbabe242f72ee7a21d125a59272f24c55452b`
`font_01_sfnt_off00005e8f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5E8F	19136 bytes
SHA-256: `91d819a85e08464702b4d2399b2944ce52da70a48c8f9d70c1ee064a4c662f69`

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