PDF malware analysis — malicious · 1d6cc6731cf3fb39

MALICIOUS

PDF

33.9 KB Created: 2021-07-04 13:38:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: c4458720ae427ea8a3faed4c555e122b SHA-1: ac492eb0903123c92bfddd480c28d28c2d59300a SHA-256: 1d6cc6731cf3fb39cdc307df406a3732250caf8418d4251a92ab8caec8c7d7da

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains a prominent link disguised as a game hack generator, specifically for Coin Master. This link, http://netcdn.tw/app/406889139/how-to-get-free-spins-on-coin-master-ios-game-hack, is identified as a lure for malicious redirection. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed to trick users into visiting potentially harmful websites.

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/406889139/how-to-get-free-spins-on-coin-master-ios-game-hack PDF link annotation
- https://goodtools.tw/upload/files/free-coin-master-coins-and-spins_GM406889139.pdfIn PDF document text
- https://goodtools.tw/upload/files/free-roblox-tuxedo_GM431946152.pdfIn PDF document text
- https://goodtools.tw/upload/files/free-tiktok-video_GM835599320.pdfIn PDF document text
- https://goodtools.tw/upload/files/robux-hack-download-2021_GM431946152.pdfIn PDF document text
- https://goodtools.tw/upload/files/free-robux-obby-2021_GM431946152.pdfIn PDF document text
- https://goodtools.tw/upload/files/roblox-hacks-2021_GM431946152.pdfIn PDF document text
- https://goodtools.tw/upload/files/free-robux-no-verification-2021-ios_GM431946152.pdfIn PDF document text
- https://goodtools.tw/upload/files/how-to-get-free-robux-instantly_GM431946152.pdfIn PDF document text
- https://goodtools.tw/upload/files/robux-free-c_GM431946152.pdfIn PDF document text
- https://goodtools.tw/upload/files/roblox-hack-the-streets_GM431946152.pdfIn PDF document text
- https://goodtools.tw/upload/files/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
- https://goodtools.tw/upload/files/coin-master-hack-apk-download-2021_GM406889139.pdfIn PDF document text
- https://goodtools.tw/upload/files/promo-codes-for-free-stuff-roblox-2021_GM431946152.pdfIn PDF document text
- https://goodtools.tw/upload/files/what-games-on-roblox-give-you-free-robux_GM431946152.pdfIn PDF document text
- https://goodtools.tw/upload/files/roblox-hack-2021-cheat-engine-2021_GM431946152.pdfIn PDF document text
- https://goodtools.tw/upload/files/free-robux-without-verification_GM431946152.pdfIn PDF document text
- https://goodtools.tw/upload/files/how-to-coin-master-hack_GM406889139.pdfIn PDF document text
- https://goodtools.tw/upload/files/roblox-hacks-com_GM431946152.pdfIn PDF document text
- https://goodtools.tw/upload/files/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
- https://goodtools.tw/upload/files/free-card-link-coin-master_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_off00002eee.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2EEE	22856 bytes
SHA-256: `77f87bf2fef9466ff20d6cf1897a4cfa2da4c5ff9934af35de32a9f0ba175f25`
`font_01_sfnt_off000061d6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x61D6	18336 bytes
SHA-256: `8feb4de5e0b81dfb5bdd45a4e83ab8cdf26242fb4b01d276e6d24fc13f5d61a8`

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