PDF malware analysis — malicious · 29d72ae20115da23

MALICIOUS

PDF

46.0 KB Created: 2021-06-03 21:59:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: e04e6d7f16c7e3f3ded14f034a24b1b9 SHA-1: 11c7dabde03eda4ca1f7cf2bf14ce5059a29a2ba SHA-256: 29d72ae20115da23862936b3aac98d60e23436348fe8f5c2603e96e188ea3683

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 0.9864

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-skins-boy-free-game-hack PDF link annotation
- http://www.js100.com/uploads/ckeditor/files/free-robux-offers_GM431946152.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/free-robux-2021-no-verification_GM431946152.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/coin-master-free-spins-activegamer_GM406889139.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/100-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/coin-master-mod_GM406889139.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/minecraft-hacks-18-9_GM479516143.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/roblox-bloxburg-free-money_GM431946152.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/best-minecraft-hacks_GM479516143.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/codes-to-get-free-robux_GM431946152.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/free-robux-link_GM431946152.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/blox-pink-robux-free_GM431946152.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/coin-master-daily-free-spins-2021_GM406889139.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/free-robux-generator-without-verification_GM431946152.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/best-free-minecraft-texture-packs_GM479516143.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/coin-master-daily-free-spins-link-today_GM406889139.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/generator-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_off000054d9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x54D9	26836 bytes
SHA-256: `3226186fc3be9c46a250a9bf11c98424a28ee8aa17df49f2a0a6c3a953445291`
`font_01_sfnt_off000090e0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x90E0	18420 bytes
SHA-256: `f34de68c913d1c931e579594a611635df95b6f402bf6c6d3ef5f8f4a3ceebe71`

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