PDF malware analysis — malicious · 87d09dac760925ea

MALICIOUS

PDF

34.1 KB Created: 2021-06-29 12:17:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18

MD5: e0a9e53bcc5bc263e9a3e868eacfcfd8 SHA-1: c6196dd0ecdc0ed386fb996a4907a36593eb192d SHA-256: 87d09dac760925eaa36492b96963b71808aee7587fdbf7f41703f0a204b225a2

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.co/app/431946152/roblox-free-for-tablet-game-hack PDF link annotation
- https://silvterie.com.br/images/ckfinder/files/roblox-dominus-free_GM431946152.pdfIn PDF document text
- https://silvterie.com.br/images/ckfinder/files/roblox-hacked-client-2021_GM431946152.pdfIn PDF document text
- https://silvterie.com.br/images/ckfinder/files/free-money-and-spins-coin-master_GM406889139.pdfIn PDF document text
- https://silvterie.com.br/images/ckfinder/files/coin-master-free-spinv1-0apkpure-com-apk_GM406889139.pdfIn PDF document text
- https://silvterie.com.br/images/ckfinder/files/gametest-roblox-com-free-obc_GM431946152.pdfIn PDF document text
- https://silvterie.com.br/images/ckfinder/files/www-free-robux-com_GM431946152.pdfIn PDF document text
- https://silvterie.com.br/images/ckfinder/files/cheat-for-roblox-tix_GM431946152.pdfIn PDF document text
- https://silvterie.com.br/images/ckfinder/files/roblox-mad-city-cheat-to-kick-people_GM431946152.pdfIn PDF document text
- https://silvterie.com.br/images/ckfinder/files/roblox-free-robux-android-1_GM431946152.pdfIn PDF document text
- https://silvterie.com.br/images/ckfinder/files/pop-slots-free-vegas-casino-slots-machine-game-coin-master_GM406889139.pdfIn PDF document text
- https://silvterie.com.br/images/ckfinder/files/daily-spins-coin-master_GM406889139.pdfIn PDF document text
- https://silvterie.com.br/images/ckfinder/files/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
- https://silvterie.com.br/images/ckfinder/files/roblox-gift-card-for-free_GM431946152.pdfIn PDF document text
- https://silvterie.com.br/images/ckfinder/files/minecraft-bedrock-free_GM479516143.pdfIn PDF document text
- https://silvterie.com.br/images/ckfinder/files/hacks-for-roblox-prison-life_GM431946152.pdfIn PDF document text
- https://silvterie.com.br/images/ckfinder/files/coin-master-hack-org_GM406889139.pdfIn PDF document text
- https://silvterie.com.br/images/ckfinder/files/try-coin-master-hack_GM406889139.pdfIn PDF document text
- https://silvterie.com.br/images/ckfinder/files/roblox-hack-khol-admin-perm_GM431946152.pdfIn PDF document text
- https://silvterie.com.br/images/ckfinder/files/hack-coin-master-online-without-human-verification_GM406889139.pdfIn PDF document text
- https://silvterie.com.br/images/ckfinder/files/coin-master-free-spins-2021_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_off00003022.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3022	22032 bytes
SHA-256: `135a35d22a5c4a390ae9b4a8bd5369cd5f95494ed3bae2e2d543adfbefa0bbd3`
`font_01_sfnt_off00006119.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6119	18752 bytes
SHA-256: `b29aa8a57b8bf94ff9b27de4e0ffa3c3a397a2944a73e8a8f6e2fd57afc8b82b`

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