PDF malware analysis — malicious · b33fd099e44b3527

MALICIOUS

PDF

35.2 KB Created: 2021-07-03 17:44:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01

MD5: ff2890d62e0d710af1e009376756d019 SHA-1: 201786bd41637937d414b0398bcdb121a4539e58 SHA-256: b33fd099e44b3527f38a70f7428bc2e86aa10cb1c72acdf828b068ac66e869d8

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/406889139/coinmasterfreespins-game-hack PDF link annotation
- https://hullerkopipagaralam.com/ckfinder/userfiles/files/free-coins-for-planet-master-game_GM406889139.pdfIn PDF document text
- https://www.hullerkopipagaralam.com/ckfinder/userfiles/files/hunting-simulator-roblox-hack_GM431946152.pdfIn PDF document text
- https://www.hullerkopipagaralam.com/ckfinder/userfiles/files/how-to-hack-robux_GM431946152.pdfIn PDF document text
- https://hullerkopipagaralam.com/ckfinder/userfiles/files/how-to-hack-in-roblox-vehicle-simulator_GM431946152.pdfIn PDF document text
- https://hullerkopipagaralam.com/ckfinder/userfiles/files/coin-master-daily-free-spins-link_GM406889139.pdfIn PDF document text
- https://hullerkopipagaralam.com/ckfinder/userfiles/files/rbxoffers-com-free-robux_GM431946152.pdfIn PDF document text
- https://www.hullerkopipagaralam.com/ckfinder/userfiles/files/reddit-coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://hullerkopipagaralam.com/ckfinder/userfiles/files/rbx-robux_GM431946152.pdfIn PDF document text
- https://www.hullerkopipagaralam.com/ckfinder/userfiles/files/coin-master-free-100-spin-link_GM406889139.pdfIn PDF document text
- https://www.hullerkopipagaralam.com/ckfinder/userfiles/files/hack-coin-master-download-ios_GM406889139.pdfIn PDF document text
- https://www.hullerkopipagaralam.com/ckfinder/userfiles/files/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
- https://www.hullerkopipagaralam.com/ckfinder/userfiles/files/free-robux-promo-codes_GM431946152.pdfIn PDF document text
- https://www.hullerkopipagaralam.com/ckfinder/userfiles/files/cipherv3-roblox-exploit-rocky-hacks-and-more_GM431946152.pdfIn PDF document text
- https://hullerkopipagaralam.com/ckfinder/userfiles/files/minecraft-svg-free_GM479516143.pdfIn PDF document text
- https://www.hullerkopipagaralam.com/ckfinder/userfiles/files/how-to-cheat-in-roblox-vehicle-simulator_GM431946152.pdfIn PDF document text
- https://hullerkopipagaralam.com/ckfinder/userfiles/files/how-to-get-free-roblox-money_GM431946152.pdfIn PDF document text
- https://www.hullerkopipagaralam.com/ckfinder/userfiles/files/free-minecraft-printables_GM479516143.pdfIn PDF document text
- https://hullerkopipagaralam.com/ckfinder/userfiles/files/coin-master-latest-version-hack_GM406889139.pdfIn PDF document text
- https://hullerkopipagaralam.com/ckfinder/userfiles/files/coin-master-free-spin-link-daily_GM406889139.pdfIn PDF document text
- https://www.hullerkopipagaralam.com/ckfinder/userfiles/files/free-account-roblox-with-robux_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_off0000344a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x344A	22816 bytes
SHA-256: `bf06d25a9e748ce5de95529c050b7135653543151b150e20379fb78f8512acb6`
`font_01_sfnt_off000066f3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x66F3	18272 bytes
SHA-256: `07d1048110b648044dfdf05b80b578e3dafb2e438d2dd29495699789e7328ffb`

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