PDF malware analysis — malicious · 90ae2e4cf26af4b7

MALICIOUS

PDF

44.0 KB Created: 2021-05-19 04:01:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04

MD5: 4557639f63525f922f8c96f97d1762d2 SHA-1: dd4d4b73d0997a06400b5b300cf348bc9821d02b SHA-256: 90ae2e4cf26af4b73dcbe3d00d8d351b24bb0211b968deebe3094787adaf9cd8

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'game hacks' and 'free coins/spins'. The primary lure appears to be a 'coin master free generator' which leads to the URL https://netcdn.xyz/app/406889139/coin-master-free-coins-and-spins-2021-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a social engineering attack aimed at tricking users into visiting potentially harmful sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9969

Heuristics 4

PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK

PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
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
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-free-coins-and-spins-2021-game-hack In PDF document text
- https://www.indobalitour.com/new/public/ckfinder/userfiles/files/coin-master-pro-hack_GM406889139.pdfIn PDF document text
- https://www.indobalitour.com/new/public/ckfinder/userfiles/files/can-you-still-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
- https://www.indobalitour.com/new/public/ckfinder/userfiles/files/free-roebucks-com_GM431946152.pdfIn PDF document text
- https://www.indobalitour.com/new/public/ckfinder/userfiles/files/haktutsin-2021-09-coinmaster50freespinandcoinlinkhtml-m-1_GM406889139.pdfIn PDF document text
- https://www.indobalitour.com/new/public/ckfinder/userfiles/files/how-to-get-free-robux-fast_GM431946152.pdfIn PDF document text
- https://www.indobalitour.com/new/public/ckfinder/userfiles/files/free-admin-roblox_GM431946152.pdfIn PDF document text
- https://www.indobalitour.com/new/public/ckfinder/userfiles/files/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
- https://www.indobalitour.com/new/public/ckfinder/userfiles/files/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
- https://www.indobalitour.com/new/public/ckfinder/userfiles/files/free-robux-com-no-verification_GM431946152.pdfIn PDF document text
- https://www.indobalitour.com/new/public/ckfinder/userfiles/files/hacked-roblox-game_GM431946152.pdfIn PDF document text
- https://www.indobalitour.com/new/public/ckfinder/userfiles/files/free-robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
- https://www.indobalitour.com/new/public/ckfinder/userfiles/files/free-spins-coins-coin-master_GM406889139.pdfIn PDF document text
- https://www.indobalitour.com/new/public/ckfinder/userfiles/files/free-private-minecraft-server_GM479516143.pdfIn PDF document text
- https://www.indobalitour.com/new/public/ckfinder/userfiles/files/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
- https://www.indobalitour.com/new/public/ckfinder/userfiles/files/coin-master-free-spins-and-coins-daily-links_GM406889139.pdfIn PDF document text
- https://www.indobalitour.com/new/public/ckfinder/userfiles/files/facebook-coin-master_GM406889139.pdfIn PDF document text
- https://www.indobalitour.com/new/public/ckfinder/userfiles/files/links-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
- https://www.indobalitour.com/new/public/ckfinder/userfiles/files/how-to-get-free-robux-by-playing-games_GM431946152.pdfIn PDF document text
- https://www.indobalitour.com/new/public/ckfinder/userfiles/files/hack-coin-master-no-survey_GM406889139.pdfIn PDF document text
- https://www.indobalitour.com/new/public/ckfinder/userfiles/files/free-printable-roblox-images_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_off00004b7f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4B7F	29208 bytes
SHA-256: `c7b714a28b39f0c9b692072d719783f783d3fe2c681e9114ad4162f1e37b2ada`
`font_01_sfnt_off00008916.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8916	18460 bytes
SHA-256: `9b9248072d2421e664493d6d5ab14406474bc62db1d786ff94b6c1680f0f8261`

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