PDF malware analysis — malicious · a2a5a088a507ecc7

MALICIOUS

PDF

32.3 KB Created: 2021-07-03 20:46:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05

MD5: 3753b8873b7d34009dc79aac02a86a65 SHA-1: ada6b258af56298b7f583430632d28b4ef46f74c SHA-256: a2a5a088a507ecc7cf6d80a2867a92186e4ae2e380791b023cc1aa4f49890bc2

74 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains a high-confidence heuristic indicating it links to a game hack redirector. The document body and extracted URLs reinforce this, pointing to sites offering 'hacks' for games like Coin Master and Roblox. The primary URL, http://netcdn.tw/app/406889139/coin-master-mod-game-hack, is the most direct indicator of the malicious lure.

Machine Learning

Nyx PDF Classifier malicious score 0.9993

Heuristics 3

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.
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/coin-master-mod-game-hack PDF link annotation
- https://www.nordicstar.co.uk/uploads/files/files/free-robux-codez-apk_GM431946152.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/free-robux-kid-friendly-no-human-verification_GM431946152.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/ash-shirt-only-the-free-ones-on-roblox-shopping_GM431946152.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/coin-master-hack_GM406889139.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/dll-hack-for-roblox-assasin_GM431946152.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/free-robux-without-email_GM431946152.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/cheat-for-roblox-phantom-forces_GM431946152.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/free-pilot-helmet-roblox_GM431946152.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/roblox-hack-khol-admin-house_GM431946152.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/free-robux-hack-100-works-2021_GM431946152.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/how-to-use-roblox-cheats-on-xbox-one_GM431946152.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/pokemon-go-free-friend-codes_GM1094591345.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/is-roblox-free-on-the-computer_GM431946152.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/coin-master-hack-iosgods_GM406889139.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/coin-master-free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/coin-master-hack-iphone_GM406889139.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/free-robux-no-survey_GM431946152.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/roblox-army-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_off00002f53.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2F53	22424 bytes
SHA-256: `e89fc1baa30a4e71c950ceef83f7de216c29c203f7066f05e1e01c6c1d118a7e`
`font_01_sfnt_off00006110.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6110	18008 bytes
SHA-256: `9b1b8022fecd0e698345aa4518e5e5ceb9dfed4ff19bb9e19d156964a7983e20`

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