PDF malware analysis — malicious · 2e8d0153a425e5fb

MALICIOUS

PDF

46.5 KB Created: 2021-06-03 22:14:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24

MD5: 83ef56cc718faaba9038a3a2b9001a83 SHA-1: 21930b95f0082c8ded2992788c4bbcbb534ab6b0 SHA-256: 2e8d0153a425e5fbfd6628d9bce246419c36f49c81c70c108c5b316b4e7ecb96

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

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 0.9748

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.online/app/406889139/coin-master-time-hack-game-hack PDF link annotation
- http://www.js100.com/uploads/ckeditor/files/free-robux-hacker-us_GM431946152.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/facebook-coin-master-free-spins_GM406889139.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/is-roblox-free-on-xbox_GM431946152.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/demon-roblox_GM431946152.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/hack-version-of-coin-master_GM406889139.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/how-do-you-earn-free-coins-for-coin-master_GM406889139.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/games-like-minecraft-but-free_GM479516143.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/how-to-hack-roblox-jailbreak_GM431946152.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/free-roblox-boy-hair_GM431946152.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/rbxoffers-com-free-robux_GM431946152.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/roblox-report-hacker_GM431946152.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/minecraft-tiktok-hacks_GM479516143.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/roblox-hacked-com-2021_GM431946152.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/minecraft-apk-free-download-016-0_GM479516143.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/buxblast-com-robux_GM431946152.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/free-robux-obby-2021_GM431946152.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/free-robux-promo-codes_GM431946152.pdfIn PDF document text
- https://www.urcouponsdeal.com/2019/03/coin-master-free-spin-and-coin-links.htmlIn PDF document text
- https://coinmasterspinandcoin.comIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_004_off00005195.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x5195	24488 bytes
SHA-256: `4184c144e8752e5b6889f3180430bac1b7dc98240ce817fa61bc3ff6ace3d65e`
`font_01_sfnt_off00008a08.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8A08	2880 bytes
SHA-256: `10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132`
`font_02_sfnt_off000093f2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x93F2	17976 bytes
SHA-256: `87fff38dbb03260eba139e3e02117f9160eb94cd4e4c58474dc2e0f8f330ccfe`

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