PDF malware analysis — malicious · 8031daa62b36061c

MALICIOUS

PDF

33.7 KB Created: 2021-07-03 18:42:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 7f0eab609f414d12f15f011b7445e265 SHA-1: 5f91ed8861b5ab4397c33dad45b93a9e2369ddc7 SHA-256: 8031daa62b36061cf51dd3d5abc4653ba9d0177306f9c38014b2caa48d1902bc

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document employs a game hack lure to trick users into visiting a malicious URL. The primary link, http://netcdn.tw/app/406889139/coin-master-mod-game-hack, is designed to exploit the user's desire for in-game advantages. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a social engineering attack aimed at driving traffic to potentially malicious content or further downloads.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/406889139/coin-master-mod-game-hack PDF link annotation
- https://cosmosocean.com.tw/upload/files/roblox-arsenal-hacks-download_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/how-do-u-get-free-robux-on-iphone_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/roblox-fly-hack-download-2021_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/cheat-engine-hack-in-roblox-high-school_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/minecraft-pocket-edition-free-download_GM479516143.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/free-robux-not-fake_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/roblox-map-editor-hack_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/robux-generator-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/free-robux-no-gift-card_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/free-roblox-templates_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/robux-codes_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/coin-master-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/roblox-robux_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/links-for-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/how-t-oget-free-robux_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/coin-master-free-spins-generator-no-human-verification_GM406889139.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/roblox-island-royale-download-free_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/or-sur-roblox-tower-battles-cheat_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/hack-coin-master-apk-33_GM406889139.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/free-spin-in-coin-master_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_off0000302e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x302E	22280 bytes
SHA-256: `f3bee60bad0a76ae87e085738e4772e826500b550020351de83d547b764b72a0`
`font_01_sfnt_off000061a5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x61A5	18008 bytes
SHA-256: `9b1b8022fecd0e698345aa4518e5e5ceb9dfed4ff19bb9e19d156964a7983e20`

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