PDF malware analysis — malicious · 9cda9c8f0bf1e5d2

MALICIOUS

PDF

36.0 KB Created: 2021-07-08 15:42:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 35ebfe4ef1cf9b57076d41dc8282a2fe SHA-1: dcebb38f4afe4415ae986b51d6989c717e20c9be SHA-256: 9cda9c8f0bf1e5d2d7053c8d5a5058f7edf3e0cde94d28e00ee1570149aa5f36

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/redeem-roblox-card-free-game-hack PDF link annotation
- https://5dollarslogo.com/ckfinder/userfiles/files/how-to-get-minecraft-java-for-free_GM479516143.pdfIn PDF document text
- https://5dollarslogo.com/ckfinder/userfiles/files/coin-master-gameplay_GM406889139.pdfIn PDF document text
- https://5dollarslogo.com/ckfinder/userfiles/files/roblox-free-executor_GM431946152.pdfIn PDF document text
- https://5dollarslogo.com/ckfinder/userfiles/files/free-robux-no-human-vervication_GM431946152.pdfIn PDF document text
- https://5dollarslogo.com/ckfinder/userfiles/files/roblox-redeem-robux_GM431946152.pdfIn PDF document text
- https://5dollarslogo.com/ckfinder/userfiles/files/free-robux-gen_GM431946152.pdfIn PDF document text
- https://5dollarslogo.com/ckfinder/userfiles/files/free-robux-rapido_GM431946152.pdfIn PDF document text
- https://5dollarslogo.com/ckfinder/userfiles/files/roblox-mining-simlator-cheats_GM431946152.pdfIn PDF document text
- https://5dollarslogo.com/ckfinder/userfiles/files/is-minecraft-java-free_GM479516143.pdfIn PDF document text
- https://5dollarslogo.com/ckfinder/userfiles/files/coin-master-free-coins-twitter_GM406889139.pdfIn PDF document text
- https://5dollarslogo.com/ckfinder/userfiles/files/free-links-for-coin-master_GM406889139.pdfIn PDF document text
- https://5dollarslogo.com/ckfinder/userfiles/files/free-minecraft-worlds_GM479516143.pdfIn PDF document text
- https://5dollarslogo.com/ckfinder/userfiles/files/free-robux-co_GM431946152.pdfIn PDF document text
- https://5dollarslogo.com/ckfinder/userfiles/files/roblox-vehicle-simulaor-hack-2021_GM431946152.pdfIn PDF document text
- https://5dollarslogo.com/ckfinder/userfiles/files/how-to-change-roblox-username-for-free_GM431946152.pdfIn PDF document text
- https://5dollarslogo.com/ckfinder/userfiles/files/ulgamesresources-com-roblox-hack_GM431946152.pdfIn PDF document text
- https://5dollarslogo.com/ckfinder/userfiles/files/free-ban-roblox_GM431946152.pdfIn PDF document text
- https://5dollarslogo.com/ckfinder/userfiles/files/wahoogaming-co-free-robux_GM431946152.pdfIn PDF document text
- https://5dollarslogo.com/ckfinder/userfiles/files/roblox-plates-of-fate-hack-coal_GM431946152.pdfIn PDF document text
- https://5dollarslogo.com/ckfinder/userfiles/files/minecraft-coins-free_GM479516143.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_off00003544.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3544	22540 bytes
SHA-256: `ae5cf37a2068da77aedd3237c5e7eefa16489c80b3b02fa0f26421e30aca0291`
`font_01_sfnt_off00006788.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6788	19084 bytes
SHA-256: `28b83e4f342e4f09a2889314eefb4cea0c2396b4c6f42210c3755af6e96d1200`

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