PDF malware analysis — malicious · 8ad196bfb4cd4a7e

MALICIOUS

PDF

35.3 KB Created: 2021-07-03 19:50:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: c20ce2491de9b80bd0f377adb3a812f2 SHA-1: de9463a517d9146450cd412cb9f122b775d8dbee SHA-256: 8ad196bfb4cd4a7e4b9bcf01da87e288228d826fe95bfbcc85846768b168fbee

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/roblox-redeem-card-codes-free-game-hack PDF link annotation
- https://amiranet.com.br/files/files/minecraft-free-computer-game_GM479516143.pdfIn PDF document text
- https://amiranet.com.br/files/files/tiktok-free-online_GM835599320.pdfIn PDF document text
- https://amiranet.com.br/files/files/free-pe_GM479516143.pdfIn PDF document text
- https://amiranet.com.br/files/files/what-are-points-for-in-roblox_GM431946152.pdfIn PDF document text
- https://amiranet.com.br/files/files/robux-free-tips-download_GM431946152.pdfIn PDF document text
- https://amiranet.com.br/files/files/free-executors-for-roblox_GM431946152.pdfIn PDF document text
- https://amiranet.com.br/files/files/roblox-adopt-me-hack_GM431946152.pdfIn PDF document text
- https://amiranet.com.br/files/files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
- https://amiranet.com.br/files/files/free-download-play-roblox_GM431946152.pdfIn PDF document text
- https://amiranet.com.br/files/files/roblox-hunger-games-hack_GM431946152.pdfIn PDF document text
- https://amiranet.com.br/files/files/best-minecraft-hacked-client_GM479516143.pdfIn PDF document text
- https://amiranet.com.br/files/files/free-robux-web-store_GM431946152.pdfIn PDF document text
- https://amiranet.com.br/files/files/free-minecraft-skins-girl_GM479516143.pdfIn PDF document text
- https://amiranet.com.br/files/files/minecraft-java-edition-download-free_GM479516143.pdfIn PDF document text
- https://amiranet.com.br/files/files/free-robux-gift-card-codes-2021_GM431946152.pdfIn PDF document text
- https://amiranet.com.br/files/files/games-that-give-free-robux-2021_GM431946152.pdfIn PDF document text
- https://amiranet.com.br/files/files/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
- https://amiranet.com.br/files/files/free-robux-easly_GM431946152.pdfIn PDF document text
- https://amiranet.com.br/files/files/coin-master-email-rewards-link_GM406889139.pdfIn PDF document text
- https://amiranet.com.br/files/files/how-to-change-roblox-name-for-free_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_off00003353.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3353	22216 bytes
SHA-256: `7924f1b7e33a0d54ad9a4d0d3d43e7af842799f69109ce52bf80b74043b5b701`
`font_01_sfnt_off000064dc.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x64DC	19084 bytes
SHA-256: `83d93891039d5d6425f59be3dd68d42e34fb3560b963d7958afad9911eacf116`

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