PDF malware analysis — malicious · 3b0d82f71c0fbed0

MALICIOUS

PDF

34.9 KB Created: 2021-07-07 04:09:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: b063d67ff498a3526eaccf83f7ba580f SHA-1: b264f18b924d73bfe62c6e083f1e623ecee8bba1 SHA-256: 3b0d82f71c0fbed0336abcf35b24e240fde63d30f0736186d0f13d9ef4c94c83

142 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document contains a high number of external links, many of which are SEO-optimized and point to pages offering game hacks and free in-game currency. The primary lure URL is http://netcdn.tw/app/406889139/get-free-spins-coin-master-link-game-hack, which is likely a redirector to a malicious site. The document's structure and content strongly suggest a phishing or malware distribution attempt, masquerading as a helpful resource for popular games.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

Heuristics 5

Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM

Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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 http://netcdn.tw/app/406889139/get-free-spins-coin-master-link-game-hack PDF link annotation
- https://www.portalgrandeponto.com.br/public/uploads/galerias/ckeditor/files/roblox-hacked-version-download_GM431946152.pdfIn PDF document text
- https://www.portalgrandeponto.com.br/public/uploads/galerias/ckeditor/files/coin-master-spin-hack-without-verification_GM406889139.pdfIn PDF document text
- https://www.portalgrandeponto.com.br/public/uploads/galerias/ckeditor/files/free-spins-on-coin-master-link_GM406889139.pdfIn PDF document text
- https://www.portalgrandeponto.com.br/public/uploads/galerias/ckeditor/files/coin-master-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
- https://www.portalgrandeponto.com.br/public/uploads/galerias/ckeditor/files/roblox-gun-game-hacks_GM431946152.pdfIn PDF document text
- https://www.portalgrandeponto.com.br/public/uploads/galerias/ckeditor/files/sites-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.portalgrandeponto.com.br/public/uploads/galerias/ckeditor/files/coin-master-code-hack_GM406889139.pdfIn PDF document text
- https://www.portalgrandeponto.com.br/public/uploads/galerias/ckeditor/files/coin-master-online-hack-link_GM406889139.pdfIn PDF document text
- https://www.portalgrandeponto.com.br/public/uploads/galerias/ckeditor/files/free-car-jailbreak-roblox_GM431946152.pdfIn PDF document text
- https://www.portalgrandeponto.com.br/public/uploads/galerias/ckeditor/files/how-to-hack-robux-easy_GM431946152.pdfIn PDF document text
- https://www.portalgrandeponto.com.br/public/uploads/galerias/ckeditor/files/master-free-spin-and-coin-link_GM406889139.pdfIn PDF document text
- https://www.portalgrandeponto.com.br/public/uploads/galerias/ckeditor/files/coin-master-hack-app-2021-download_GM406889139.pdfIn PDF document text
- https://www.portalgrandeponto.com.br/public/uploads/galerias/ckeditor/files/fre-robuxe_GM431946152.pdfIn PDF document text
- https://www.portalgrandeponto.com.br/public/uploads/galerias/ckeditor/files/coin-master-tiradas-gratis-link_GM406889139.pdfIn PDF document text
- https://www.portalgrandeponto.com.br/public/uploads/galerias/ckeditor/files/minecraft-bedrock-edition-pc-download-free_GM479516143.pdfIn PDF document text
- https://www.portalgrandeponto.com.br/public/uploads/galerias/ckeditor/files/roblox-tampermonkey-hack_GM431946152.pdfIn PDF document text
- https://www.portalgrandeponto.com.br/public/uploads/galerias/ckeditor/files/how-can-you-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.portalgrandeponto.com.br/public/uploads/galerias/ckeditor/files/coin-master-spin-hack-apk_GM406889139.pdfIn PDF document text
- https://www.portalgrandeponto.com.br/public/uploads/galerias/ckeditor/files/how-can-i-get-free-coinsn-coin-master_GM406889139.pdfIn PDF document text
- https://www.portalgrandeponto.com.br/public/uploads/galerias/ckeditor/files/free-robux-no-human-verification-or-survey_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_off00003251.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3251	22904 bytes
SHA-256: `ec72244300d9d370b206d2349677b6069c4aeac40334c8cf18e3c4ea88b3cc21`
`font_01_sfnt_off00006596.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6596	18344 bytes
SHA-256: `008ba69f0314e9023a50c7a3f8f30ae70ce6a190ac3370128d1712d4e8427767`

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