PDF malware analysis — malicious · 82eab6d3eefb93c6

MALICIOUS

PDF

34.6 KB Created: 2021-07-05 20:22:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05

MD5: 4d244874081c860250c101f5803e89e6 SHA-1: 5ad55687987f8e9b64facf0372293e4a7350ecd6 SHA-256: 82eab6d3eefb93c65797f9da71abe0f6bf627d8701e5306fdb8947f4d6e7348e

82 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 lure, specifically for Coin Master. The embedded URL http://netcdn.tw/app/406889139/coin-master-free-coins-and-spins-2021-game-hack is the primary indicator of malicious intent, likely serving as a redirector to a phishing site or a malware download. While no scripts were explicitly extracted, the nature of the lure suggests a potential for further malicious actions.

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-free-coins-and-spins-2021-game-hack PDF link annotation
- https://ethraa.ae/userfiles/files/coin-master-codes_GM406889139.pdfIn PDF document text
- https://ethraa.ae/userfiles/files/where-can-i-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
- https://ethraa.ae/userfiles/files/tryrbx-site-free-robux_GM431946152.pdfIn PDF document text
- https://ethraa.ae/userfiles/files/roblox-arsenal-hack_GM431946152.pdfIn PDF document text
- https://ethraa.ae/userfiles/files/coin-master-mod-version-free-download-ios_GM406889139.pdfIn PDF document text
- https://ethraa.ae/userfiles/files/robux-hack-generator_GM431946152.pdfIn PDF document text
- https://ethraa.ae/userfiles/files/free-spins-coin-master-unlimited_GM406889139.pdfIn PDF document text
- https://ethraa.ae/userfiles/files/coin-master-hack-version-download-2021_GM406889139.pdfIn PDF document text
- https://ethraa.ae/userfiles/files/how-can-i-free-robux-on-roblox-games_GM431946152.pdfIn PDF document text
- https://ethraa.ae/userfiles/files/coin-master-free-gold-cards-link_GM406889139.pdfIn PDF document text
- https://ethraa.ae/userfiles/files/free-roblox-accounts_GM431946152.pdfIn PDF document text
- https://ethraa.ae/userfiles/files/coin-master-apk-hacked-3526_GM406889139.pdfIn PDF document text
- https://ethraa.ae/userfiles/files/coin-master-app-hack_GM406889139.pdfIn PDF document text
- https://ethraa.ae/userfiles/files/roblox-admin-badge-free_GM431946152.pdfIn PDF document text
- https://ethraa.ae/userfiles/files/free-robux-no-gift-card_GM431946152.pdfIn PDF document text
- https://ethraa.ae/userfiles/files/rbx-hut-promo-codes_GM431946152.pdfIn PDF document text
- https://ethraa.ae/userfiles/files/coin-master-free-link_GM406889139.pdfIn PDF document text
- https://ethraa.ae/userfiles/files/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
- https://ethraa.ae/userfiles/files/classic-minecraft-net-hacks_GM479516143.pdfIn PDF document text
- https://ethraa.ae/userfiles/files/80-free-spins-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
`stream_002_off00002dea.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x2DEA	23504 bytes
SHA-256: `44ee25d857359461454f162a2ceb361a6eed66aa7ba9ec9678a75991d504071c`
`font_01_sfnt_off00006303.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6303	18752 bytes
SHA-256: `9cfff5c9d368e8e7141644af730753f5e6032632d251e368c47cb3100a9cf956`

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