PDF malware analysis — malicious · da8a241e0717d646

MALICIOUS

PDF

34.6 KB Created: 2021-07-08 18:29:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17

MD5: b08da2efd01d152476797eba2252a6a9 SHA-1: 69ea0d82f1a80ede4a45503bb648b3cefd6e0108 SHA-256: da8a241e0717d646003e4e58b6826bb8e6b3dd7f754874227e22dc96def4e145

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document contains a lure for game hacks, specifically for Coin Master and Roblox, directing users to external URLs. The presence of embedded URLs and the 'GAME_HACK_REDIRECT_LURE' heuristic strongly suggest a phishing or scam attempt designed to trick users into visiting malicious sites. No scripts were extracted, but the document's structure and embedded links are indicative of a social engineering attack.

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-app-game-hack PDF link annotation
- https://maths-pdf.fr/ckfinder/userfiles/files/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/roblox-pastabin-hack-script_GM431946152.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/hack-coin-master-no-verification_GM406889139.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/can-you-hack-coin-master_GM406889139.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/how-to-get-free-robux-on-pc-windows-10-2021_GM431946152.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/roblox-generator-com_GM431946152.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/free-tiktok-hearts_GM835599320.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/best-free-robux-sites_GM431946152.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/rbx-roblox-robux_GM431946152.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/coin-master-free-spin-daily-bonus_GM406889139.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/hack-coin-master-2021_GM406889139.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/coin-master-free-spin-ml_GM406889139.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/hack-players-in-roblox_GM431946152.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/free-robux-generator-2021-no-human-verification_GM431946152.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/how-to-get-free-roblox-money-2021_GM431946152.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/get-minecraft-for-free_GM479516143.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/roblox-shirts-for-girls-free-shipping_GM431946152.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/coin-master-free-download-pc_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_off00003117.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x3117	22964 bytes
SHA-256: `66b0ac2a7a66c3c751576218565947ecf50f93cef05c523e48f6324cc1d22703`
`font_01_sfnt_off00006468.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6468	18348 bytes
SHA-256: `8f4e14d352258b2a04c4750a5c5e6ee18e44525ef82eed3820f54d352c64eef8`

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