PDF malware analysis — malicious · c2bb7100197e8dd5

MALICIOUS

PDF

43.2 KB Created: 2021-06-03 08:20:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 9a16483872ed614b15327bff0e8fea6f SHA-1: 6726b0b664a421d25756e52c217b8c4e150f5f10 SHA-256: c2bb7100197e8dd52229b26367fd8bfc0ae6d4a31769cc478f966314de5f63f2

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains multiple embedded URLs that are designed as lures for game hacks and free currency. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' specifically identifies this pattern. The primary URL, https://netcdn.online/app/431946152/roblox-install-free-game-hack, is a strong indicator of a malicious redirect or download attempt. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to trick users into downloading further malicious content.

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/431946152/roblox-install-free-game-hack PDF link annotation
- http://www.js100.com/uploads/ckeditor/files/free-spins-and-coins-coin-master-link-2021_GM406889139.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/pig-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/best-free-spins-link-coin-master_GM406889139.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/how-to-get-free-robux-for-free_GM431946152.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/coin-master-hack-for-ios_GM406889139.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/how-to-get-free-gamepasses-on-roblox_GM431946152.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/roblox-install-free_GM431946152.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/how-to-get-minecraft-realms-for-free_GM479516143.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/coin-master-100-free-spins-link_GM406889139.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/coin-master-hacks-xyz_GM406889139.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/minecraft-hacked-client_GM479516143.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/free-robux-no-verification_GM431946152.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/free-roblox-passwords_GM431946152.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/how-to-hack-coin-master-with-root_GM406889139.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/roblox-army-free-robux_GM431946152.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/collect-free-spins-coin-master_GM406889139.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/hack-avatar_GM431946152.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/free-spin-link-coin-master_GM406889139.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/games-on-roblox-that-give-you-free-robux_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_off00004dad.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4DAD	25036 bytes
SHA-256: `053feb81c9e01b9e42812ab7923bec043f03625af91c7ff45615200564998c48`
`font_01_sfnt_off000085f7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x85F7	18280 bytes
SHA-256: `3c3a3b9ea50be1288d4e90d28d6823d5d0e7fce454efe1523ba787caa6fa0fc3`

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