PDF malware analysis — malicious · 77bb0ce563f3369e

MALICIOUS

PDF

32.8 KB Created: 2021-06-28 19:30:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: 2ebb8ad5f9316c8a204ac80658f4a22d SHA-1: 18b0a8361c7c1c2ea8e2db56d246a31dd832d49a SHA-256: 77bb0ce563f3369ea2c0a64fb513bd7c8612911a2762dffa5cfd25654ea69f0e

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 0.9824

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/free-robux-from-roblox-games-game-hack PDF link annotation
- https://www.extrifit.com/uploads/ckfinder/userfiles/files/coin-master-free-coins-and-spins-link_GM406889139.pdfIn PDF document text
- https://www.extrifit.com/uploads/ckfinder/userfiles/files/redeem-roblox-card-free_GM431946152.pdfIn PDF document text
- https://www.extrifit.com/uploads/ckfinder/userfiles/files/is-roblox-free-on-iphone_GM431946152.pdfIn PDF document text
- https://www.extrifit.com/uploads/ckfinder/userfiles/files/free-robux-no-human-verification-2021-generator_GM431946152.pdfIn PDF document text
- https://www.extrifit.com/uploads/ckfinder/userfiles/files/free-robux-today_GM431946152.pdfIn PDF document text
- https://www.extrifit.com/uploads/ckfinder/userfiles/files/coin-master-daily-spin-link_GM406889139.pdfIn PDF document text
- https://www.extrifit.com/uploads/ckfinder/userfiles/files/coin-master-hack-app-download-free_GM406889139.pdfIn PDF document text
- https://www.extrifit.com/uploads/ckfinder/userfiles/files/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
- https://www.extrifit.com/uploads/ckfinder/userfiles/files/rblx-gg-roblox-free-robux_GM431946152.pdfIn PDF document text
- https://www.extrifit.com/uploads/ckfinder/userfiles/files/my-roblox-account-was-hacked_GM431946152.pdfIn PDF document text
- https://www.extrifit.com/uploads/ckfinder/userfiles/files/get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
- https://www.extrifit.com/uploads/ckfinder/userfiles/files/hack-coin-master-32-mod-apk_GM406889139.pdfIn PDF document text
- https://www.extrifit.com/uploads/ckfinder/userfiles/files/is-there-actually-a-hack-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.extrifit.com/uploads/ckfinder/userfiles/files/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
- https://www.extrifit.com/uploads/ckfinder/userfiles/files/free-spins-and-coins-com_GM406889139.pdfIn PDF document text
- https://www.extrifit.com/uploads/ckfinder/userfiles/files/free-coin-spin-coin-master_GM406889139.pdfIn PDF document text
- https://www.extrifit.com/uploads/ckfinder/userfiles/files/free-spin-coin-master-hack-2021_GM406889139.pdfIn PDF document text
- https://www.extrifit.com/uploads/ckfinder/userfiles/files/free-minecraft-java-account_GM479516143.pdfIn PDF document text
- https://www.extrifit.com/uploads/ckfinder/userfiles/files/free-robux-mobile_GM431946152.pdfIn PDF document text
- https://www.extrifit.com/uploads/ckfinder/userfiles/files/minecraft-18-9-hacked-client_GM479516143.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_off00002bcb.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2BCB	21568 bytes
SHA-256: `f5bd99208f892480305bca08070c5987bbf664a120b09453dea063c1c552753c`
`font_01_sfnt_off00005b5a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5B5A	19052 bytes
SHA-256: `787576fc13befbcdfac3392b558f44946b678e9779535c28ba19b06329785a8c`

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