PDF malware analysis — malicious · a4de59c68f105b77

MALICIOUS

PDF

43.3 KB Created: 2021-05-19 23:04:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04

MD5: e032ea7a50bb4def87e962fecd22074c SHA-1: 400a1eddde1a407baa8b170e91292efe2c4d793e SHA-256: a4de59c68f105b77f6c16d589a69b4e382103f2dd26bb7b0330bc154cf2afbd2

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains embedded URLs and text that promote "Coin Master Free Spins" and "hacks", suggesting a lure for potentially unwanted software or phishing. The ML classifier strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the content indicate an attempt to redirect users to malicious sites, likely for malware distribution or credential harvesting.

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-spins-2021-hack-game-hack In PDF document text
- https://rincondelentrenador.com/images/best-free-minecraft-texture-packs_GM479516143.pdfIn PDF document text
- https://rincondelentrenador.com/images/free-robux-website_GM431946152.pdfIn PDF document text
- https://rincondelentrenador.com/images/coin-master-hack-xyz-download-free_GM406889139.pdfIn PDF document text
- https://rincondelentrenador.com/images/coin-master-free-coins-link-2021_GM406889139.pdfIn PDF document text
- https://rincondelentrenador.com/images/get-robux-com_GM431946152.pdfIn PDF document text
- https://rincondelentrenador.com/images/free-2021-robux_GM431946152.pdfIn PDF document text
- https://rincondelentrenador.com/images/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
- https://rincondelentrenador.com/images/pubg-uc-dark-web_GM1330123889.pdfIn PDF document text
- https://rincondelentrenador.com/images/a-lot-of-robux_GM431946152.pdfIn PDF document text
- https://rincondelentrenador.com/images/roblox-trolling_GM431946152.pdfIn PDF document text
- https://rincondelentrenador.com/images/free-spins-coin-master-ios-links_GM406889139.pdfIn PDF document text
- https://rincondelentrenador.com/images/free-robux-codes_GM431946152.pdfIn PDF document text
- https://rincondelentrenador.com/images/coin-master-free-spin-link-today-50_GM406889139.pdfIn PDF document text
- https://rincondelentrenador.com/images/free-robux-apk_GM431946152.pdfIn PDF document text
- https://rincondelentrenador.com/images/wizard-hacks_GM479516143.pdfIn PDF document text
- https://rincondelentrenador.com/images/cm-free-spin-link-today_GM406889139.pdfIn PDF document text
- https://rincondelentrenador.com/images/roblox-arsenal-hack_GM431946152.pdfIn PDF document text
- https://rincondelentrenador.com/images/free-spins-coin-master-2021-no-verification_GM406889139.pdfIn PDF document text
- https://rincondelentrenador.com/images/free-roebucks_GM431946152.pdfIn PDF document text
- https://rincondelentrenador.com/images/how-to-get-free-robux-in-2021_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_off000048b7.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x48B7	27928 bytes
SHA-256: `c40bf80b306898b51aedc85ad19c6462a31e73069eeed5ec37075d7fbb48841c`
`font_01_sfnt_off00008693.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8693	18456 bytes
SHA-256: `01aac8443e047fcb7357b1b8ecb4a3fbe01c6e1da05f82155595583d2ef12cbf`

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