PDF malware analysis — malicious · cdca10112a84cde5

MALICIOUS

PDF

33.8 KB Created: 2021-07-06 02:01:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04

MD5: ff5c3824c384f4ab82e6556dd3993ae5 SHA-1: 61a208b93e9c0bba3c96ff5014b6169c2016cf5b SHA-256: cdca10112a84cde556aa1878010408978928d86fb4944f3483752bec3f2bff1b

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-free-robux-game-hack PDF link annotation
- https://daquagro.id/assets/vendor/ckfinder/userfiles/files/how-to-hack-roblox-to-get-to-the-admin-robux_GM431946152.pdfIn PDF document text
- https://daquagro.id/assets/vendor/ckfinder/userfiles/files/how-to-get-free-robux-without-verifying-2021_GM431946152.pdfIn PDF document text
- https://daquagro.id/assets/vendor/ckfinder/userfiles/files/how-to-hack-on-roblox-little-angels-daycare_GM431946152.pdfIn PDF document text
- https://daquagro.id/assets/vendor/ckfinder/userfiles/files/roblox-generator_GM431946152.pdfIn PDF document text
- https://daquagro.id/assets/vendor/ckfinder/userfiles/files/free-coins-and-spins_GM406889139.pdfIn PDF document text
- https://daquagro.id/assets/vendor/ckfinder/userfiles/files/how-do-you-hack-booga-booga-on-roblox_GM431946152.pdfIn PDF document text
- https://daquagro.id/assets/vendor/ckfinder/userfiles/files/coin-master-spin-link_GM406889139.pdfIn PDF document text
- https://daquagro.id/assets/vendor/ckfinder/userfiles/files/hack-roblox-one-piece-open-seas-prealpha-read-desc_GM431946152.pdfIn PDF document text
- https://daquagro.id/assets/vendor/ckfinder/userfiles/files/how-to-get-free-robux-generator_GM431946152.pdfIn PDF document text
- https://daquagro.id/assets/vendor/ckfinder/userfiles/files/coin-master-free-codes_GM406889139.pdfIn PDF document text
- https://daquagro.id/assets/vendor/ckfinder/userfiles/files/minecraft-java-edition-download-free_GM479516143.pdfIn PDF document text
- https://daquagro.id/assets/vendor/ckfinder/userfiles/files/coin-master-app-free-download_GM406889139.pdfIn PDF document text
- https://daquagro.id/assets/vendor/ckfinder/userfiles/files/robux-hacks-admin-commands_GM431946152.pdfIn PDF document text
- https://daquagro.id/assets/vendor/ckfinder/userfiles/files/coin-master-free-link_GM406889139.pdfIn PDF document text
- https://daquagro.id/assets/vendor/ckfinder/userfiles/files/free-robux-on-iphone_GM431946152.pdfIn PDF document text
- https://daquagro.id/assets/vendor/ckfinder/userfiles/files/hey-google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
- https://daquagro.id/assets/vendor/ckfinder/userfiles/files/free-unused-roblox-robux-codes_GM431946152.pdfIn PDF document text
- https://daquagro.id/assets/vendor/ckfinder/userfiles/files/coin-master-unlimited-spin-link_GM406889139.pdfIn PDF document text
- https://daquagro.id/assets/vendor/ckfinder/userfiles/files/pubg-uc-midasbuy-india_GM1330123889.pdfIn PDF document text
- https://daquagro.id/assets/vendor/ckfinder/userfiles/files/coin-master-daily-free-spins-link-today-haktuts_GM406889139.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_off00002fe2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2FE2	21800 bytes
SHA-256: `33914a63d1b6824e68a1ef890de273a982d9a1ea6a02c00e296d54c8fd5e8ffd`
`font_01_sfnt_off0000600d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x600D	18716 bytes
SHA-256: `ae86725dd70d168e8b5a24377d7effb3bd88f81667aa3e091abc0f5759eb354b`

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