PDF malware analysis — malicious · fa1b6afbc25a3e1f

MALICIOUS

PDF

44.3 KB Created: 2021-06-03 22:02:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24

MD5: 8a7e2495028d477f1369be621647772d SHA-1: f2db2aed8f61c478b5a9d791250964638ad9081d SHA-256: fa1b6afbc25a3e1f83ac8facb824125d3e69e1edf7fdba638f67ced9d3dccefa

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/431946152/roblox-hack-me-robux-game-hack PDF link annotation
- http://www.js100.com/uploads/ckeditor/files/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/minecraft-bedrock-server-hosting-free_GM479516143.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/free-printable-roblox-images_GM431946152.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/coin-master-hack-2021-ios_GM406889139.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/free-robux-gift-card_GM431946152.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/free-role-in-coin-master_GM406889139.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/free-minecraft-capes-no-mods_GM479516143.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/minecraft-skins-free-girl_GM479516143.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/minecraft-hack-mod_GM479516143.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/coin-master-free-coins-cheat_GM406889139.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/coin-master-hack-version-download-2021_GM406889139.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/roblox-hack-2021_GM431946152.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-free-spins-and-coins-hack_GM406889139.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/roblox-fly-hack_GM431946152.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/roblox-com-hack_GM431946152.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/free-robux-real_GM431946152.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/free-robux-no-verify_GM431946152.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/coin-master-hacks-reddit_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_off00004e3e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4E3E	26000 bytes
SHA-256: `48b9bc74e2a219e451645f0554ba85f5fa800fb802ecaf7e3bbef764f1d1e543`
`font_01_sfnt_off000089f4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x89F4	18520 bytes
SHA-256: `a375bd11c65aaa265b5abc99eda8135c05062389b04afd63241033984f92b3c1`

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