PDF malware analysis — malicious · 9c7c9913ed4b138a

MALICIOUS

PDF

44.9 KB Created: 2021-06-03 22:12:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04

MD5: 226d549b5cdac7907e8408f911f65a06 SHA-1: c3ea3cdfa556f29a9ef3d907dfc7f42242acf173 SHA-256: 9c7c9913ed4b138aca967ca02f0312c2fcc596beb5c0dfa1a336e393cc1fd8f2

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 0.9865

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-hack-2021-no-human-verification-game-hack PDF link annotation
- http://www.js100.com/uploads/ckeditor/files/coin-master-hack-apk-link_GM406889139.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/www-robux_GM431946152.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/robuxmatchcom-free-robux_GM431946152.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/free-robux-for-kids_GM431946152.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/without-human-verification-pubg-uc-hack_GM1330123889.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/minecraft-switch-free_GM479516143.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/coin-master-hack-spins-android_GM406889139.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/latest-free-spin-coin-master-daily_GM406889139.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/free-robux-websites-no-human-verification_GM431946152.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/hacking-apps-for-roblox_GM431946152.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/roblox-promo-codes-2021-robux_GM431946152.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/how-to-earn-robux-for-free-2021_GM431946152.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/2021-coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/what-tiktok-free-movies_GM835599320.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/coin-master-link_GM406889139.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/simplysarc_GM479516143.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/coin-master-hack-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
`stream_004_off00005092.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x5092	25740 bytes
SHA-256: `1ef5aaf8b8f1828f1ba0344ac2c5cbdab9f5cfed4ce77d3573fe3940eb6754b6`
`font_01_sfnt_off00008bc0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8BC0	18652 bytes
SHA-256: `b8f105c40d85849bb980b8b1f3fc80cc73964bf3899fc8976168334accd52214`

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