PDF malware analysis — malicious · 478cde48ac077403

MALICIOUS

PDF

46.6 KB Created: 2021-05-18 23:53:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-20

MD5: 8e1e8613c2eee5b0f1174d480d0839eb SHA-1: e4d16589be4bd3feee1e615e4cd661d65ae2940c SHA-256: 478cde48ac077403f8b9e1fe7d39a9ae668f3abb44a46f285be594726542fabe

180 Risk Score

Machine Learning

Nyx PDF Classifier malicious score 0.8948

Heuristics 5

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.
Callback phishing phone lure medium SE_CALLBACK_LURE

Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
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/835599320/tiktok-free-net-game-hack In PDF document text
- https://metropolemoveis.com.br/ckfinder/userfiles/files/free-links-coin-master_GM406889139.pdfIn PDF document text
- https://metropolemoveis.com.br/ckfinder/userfiles/files/www-bandicam-com-free-robux_GM431946152.pdfIn PDF document text
- https://metropolemoveis.com.br/ckfinder/userfiles/files/www-rbxhut-com_GM431946152.pdfIn PDF document text
- https://metropolemoveis.com.br/ckfinder/userfiles/files/free-robux-2021-no-verification_GM431946152.pdfIn PDF document text
- https://metropolemoveis.com.br/ckfinder/userfiles/files/roblox-2021_GM431946152.pdfIn PDF document text
- https://metropolemoveis.com.br/ckfinder/userfiles/files/coin-master-hack-version-download-2021-android_GM406889139.pdfIn PDF document text
- https://metropolemoveis.com.br/ckfinder/userfiles/files/www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
- https://metropolemoveis.com.br/ckfinder/userfiles/files/games-that-give-free-robux_GM431946152.pdfIn PDF document text
- https://metropolemoveis.com.br/ckfinder/userfiles/files/free-robux-clothes_GM431946152.pdfIn PDF document text
- https://metropolemoveis.com.br/ckfinder/userfiles/files/free-spins-coin-master-ios-links_GM406889139.pdfIn PDF document text
- https://metropolemoveis.com.br/ckfinder/userfiles/files/how-to-generate-free-coin-master-spin_GM406889139.pdfIn PDF document text
- https://metropolemoveis.com.br/ckfinder/userfiles/files/coin-master-free-spin-realme-products_GM406889139.pdfIn PDF document text
- https://metropolemoveis.com.br/ckfinder/userfiles/files/minecraft-free-download-apk-softonic_GM479516143.pdfIn PDF document text
- https://metropolemoveis.com.br/ckfinder/userfiles/files/kuso-icu-roblox-hack_GM431946152.pdfIn PDF document text
- https://metropolemoveis.com.br/ckfinder/userfiles/files/completed-coin-master-hack_GM406889139.pdfIn PDF document text
- https://metropolemoveis.com.br/ckfinder/userfiles/files/coin-master-hack-ios-no-verification_GM406889139.pdfIn PDF document text
- https://metropolemoveis.com.br/ckfinder/userfiles/files/free-gfx-roblox_GM431946152.pdfIn PDF document text
- https://metropolemoveis.com.br/ckfinder/userfiles/files/coin-master-free-spin-link-app_GM406889139.pdfIn PDF document text
- https://metropolemoveis.com.br/ckfinder/userfiles/files/coin-master-free-spin-link-today-50_GM406889139.pdfIn PDF document text
- https://metropolemoveis.com.br/ckfinder/userfiles/files/minecraft-windows-10-code-free_GM479516143.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_003_off00004897.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4897	28396 bytes
SHA-256: `f15559c646b3f503eccec41b0c84f4e12926c9eb06baae379590cf0948335e3c`
`font_01_sfnt_off00008894.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8894	4148 bytes
SHA-256: `db7ec909c907b23088a98ecd4cd288b476f2f66785a6e3d81bc6469138abe306`
`font_02_sfnt_off0000966a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x966A	17456 bytes
SHA-256: `f2e6c1da8c78f727d5c9248c63907fa33ab9ef6092fd5acc26cb48774d8b5cfe`

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