PDF malware analysis — malicious · 311fe8f2490530bc

MALICIOUS

PDF

42.3 KB Created: 2021-05-17 19:40:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 95af5632ed840309a716c6d21dc452eb SHA-1: cc96a7574f326432c5ace66f596da78d3185ce90 SHA-256: 311fe8f2490530bc334ef11df1234bf64741a1bf69a99e44c12951fdba152a9b

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document contains multiple links that are designed to lure users into downloading game hacks or obtaining in-game currency. The primary link, 'https://netcdn.xyz/app/406889139/coin-master-mod-apk-2021-game-hack', strongly suggests a malicious intent to redirect users to potentially harmful content. The presence of a visual download button lure further supports this malicious workflow.

Machine Learning

Nyx PDF Classifier malicious score 0.9971

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.xyz/app/406889139/coin-master-mod-apk-2021-game-hack PDF link annotation
- https://loba.com.vn/public/upload/files/free-robux-generator-2021-no-human-verification_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/roblox-generator-no-human-verification_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/coin-master-links-for-free-spins_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-robux-codes-2021-real_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/hacks-para-coin-master_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/is-minecraft-free-on-nintendo-switch_GM479516143.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/robux-codes_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-money-and-spins-coin-master_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/robloxheroxyz-free-robux_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-spin-link_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-2021-robux_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/give-free-robux_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/roblox-free-clothes-hack_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/minecraft-hacks-xbox_GM479516143.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/2021-free-coin-master-spins_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-robux-card-codes_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-roblox-accounts-with-robux-2021_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-coin-master-spins-blog_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-roblox-accounts-with-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
`stream_003_off0000473f.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x473F	25980 bytes
SHA-256: `305604593b52176b12068ca3112d6a6577315bfbea7e2b6d89bab6b3c4f807bc`
`font_01_sfnt_off00008220.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8220	18468 bytes
SHA-256: `3a864882e9e4289fde3385ccd09838686b667c82d90ee6c78e630994fecff89f`

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