PDF malware analysis — malicious · dafcddec82377ee0

MALICIOUS

PDF

42.6 KB Created: 2021-05-10 17:02:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18

MD5: e591f6edaa96fd00e4ed18b3af0c39f0 SHA-1: df3da066b1c846e14c4a9188ab2888b7172d0e04 SHA-256: dafcddec82377ee038eb944056131b222ab1df0cfe647a0c9d6c849728eae8eb

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains a lure for a "Roblox Survey For Robux" and a link to a "game hack" website. The ML classifier strongly indicated maliciousness, and the document body and heuristics confirm the intent to redirect users to potentially malicious external URLs. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

Nyx PDF Classifier malicious score 0.9971

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 https://netcdn.xyz/app/431946152/roblox-survey-for-robux-game-hack PDF link annotation
- https://silvterie.com.br/images/ckfinder/files/how-to-get-free-spins-on-coin-master-android_GM406889139.pdfIn PDF document text
- https://silvterie.com.br/images/ckfinder/files/free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
- https://silvterie.com.br/images/ckfinder/files/coin-master-reward-link_GM406889139.pdfIn PDF document text
- https://silvterie.com.br/images/ckfinder/files/coin-master-spin-hack-no-human-verification_GM406889139.pdfIn PDF document text
- https://silvterie.com.br/images/ckfinder/files/coin-master-spin-hack-app_GM406889139.pdfIn PDF document text
- https://silvterie.com.br/images/ckfinder/files/free-minecraft-worlds_GM479516143.pdfIn PDF document text
- https://silvterie.com.br/images/ckfinder/files/minecraft-free-minecraft_GM479516143.pdfIn PDF document text
- https://silvterie.com.br/images/ckfinder/files/free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
- https://silvterie.com.br/images/ckfinder/files/coin-master-free-link-today_GM406889139.pdfIn PDF document text
- https://silvterie.com.br/images/ckfinder/files/coin-master-hack-pro-gamers-com_GM406889139.pdfIn PDF document text
- https://silvterie.com.br/images/ckfinder/files/robux-codes_GM431946152.pdfIn PDF document text
- https://silvterie.com.br/images/ckfinder/files/what-games-on-roblox-give-you-free-robux_GM431946152.pdfIn PDF document text
- https://silvterie.com.br/images/ckfinder/files/coin-master-heaven-free-spins-link-2021_GM406889139.pdfIn PDF document text
- https://silvterie.com.br/images/ckfinder/files/coin-master-free-daily-spins-link-2021_GM406889139.pdfIn PDF document text
- https://silvterie.com.br/images/ckfinder/files/free-robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
- https://silvterie.com.br/images/ckfinder/files/is-there-a-free-version-of-minecraft_GM479516143.pdfIn PDF document text
- https://silvterie.com.br/images/ckfinder/files/make-robux_GM431946152.pdfIn PDF document text
- https://silvterie.com.br/images/ckfinder/files/get-free-robux_GM431946152.pdfIn PDF document text
- https://silvterie.com.br/images/ckfinder/files/how-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://silvterie.com.br/images/ckfinder/files/coin-master-hack-free-spins_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
`stream_003_off0000485e.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x485E	25700 bytes
SHA-256: `47cf51ef9e6b502b25ccb77f3c00db235614d4224fdefa323ca4dc9499fa3e4b`
`font_01_sfnt_off00008400.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8400	18384 bytes
SHA-256: `ae6046f54f30a988cdb725d80ad595b06c2ad6fcba40520792a24e4442a912fc`

Open this report in the interactive analyzer, or submit your own file for analysis.