PDF malware analysis — malicious · 4bf1047041e07433

MALICIOUS

PDF

45.4 KB Created: 2021-05-13 08:36:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04

MD5: 8cd466732e2da2e6327b85e165fbf6d1 SHA-1: 2c7e449d6c9aebe94fe211a2ed34a6b5dcde2a60 SHA-256: 4bf1047041e074339cb83457e45899905c1d4594d32bf63ff5dcb4e613f51df4

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document contains multiple links to websites offering game hacks and free in-game currency, such as 'coin-master-daily-free-spins-hack-game-hack'. These links are flagged as malicious redirectors, indicating a high likelihood of leading users to malicious sites or triggering unwanted downloads. The document body and embedded URLs reinforce this lure, suggesting a phishing or social engineering attack.

Machine Learning

Nyx PDF Classifier malicious score 0.9507

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-daily-free-spins-hack-game-hack In PDF document text
- http://niceviaapia.com.br/images/ckfinder/files/safe-hack-for-coin-master-android_GM406889139.pdfIn PDF document text
- http://niceviaapia.com.br/images/ckfinder/files/sites-to-get-free-robux_GM431946152.pdfIn PDF document text
- http://niceviaapia.com.br/images/ckfinder/files/free-spins-and-coins-for-coin-master-game_GM406889139.pdfIn PDF document text
- http://niceviaapia.com.br/images/ckfinder/files/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
- http://niceviaapia.com.br/images/ckfinder/files/coin-master-cheat-free_GM406889139.pdfIn PDF document text
- http://niceviaapia.com.br/images/ckfinder/files/robux-premium_GM431946152.pdfIn PDF document text
- http://niceviaapia.com.br/images/ckfinder/files/how-to-get-free-robux-without-downloading-any-apps_GM431946152.pdfIn PDF document text
- http://niceviaapia.com.br/images/ckfinder/files/windows-10-minecraft-hacks_GM479516143.pdfIn PDF document text
- http://niceviaapia.com.br/images/ckfinder/files/bit-ly-coin-master-hack_GM406889139.pdfIn PDF document text
- http://niceviaapia.com.br/images/ckfinder/files/coin-master-hacks-no-downloading_GM406889139.pdfIn PDF document text
- http://niceviaapia.com.br/images/ckfinder/files/coin-master-free-spins-link-download-hack_GM406889139.pdfIn PDF document text
- http://niceviaapia.com.br/images/ckfinder/files/minecraft-hack-mod_GM479516143.pdfIn PDF document text
- http://niceviaapia.com.br/images/ckfinder/files/minecraft-free-demo_GM479516143.pdfIn PDF document text
- http://niceviaapia.com.br/images/ckfinder/files/how-to-play-minecraft-for-free_GM479516143.pdfIn PDF document text
- http://niceviaapia.com.br/images/ckfinder/files/can-you-host-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
- http://niceviaapia.com.br/images/ckfinder/files/you-promised-my-son-free-robux_GM431946152.pdfIn PDF document text
- http://niceviaapia.com.br/images/ckfinder/files/tower-of-hell-roblox-hack_GM431946152.pdfIn PDF document text
- http://niceviaapia.com.br/images/ckfinder/files/coin-master-game-download-free_GM406889139.pdfIn PDF document text
- http://niceviaapia.com.br/images/ckfinder/files/free-links-for-free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
- http://niceviaapia.com.br/images/ckfinder/files/how-to-gain-more-spins-on-coin-master-for-free_GM406889139.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_off00004ac8.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4AC8	25116 bytes
SHA-256: `70f955544c5c0029b21fd24d31b50ad2a598da67d8351873a9801f38047043b7`
`font_01_sfnt_off000084d8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x84D8	2840 bytes
SHA-256: `3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676`
`font_02_sfnt_off00008e8a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8E8A	18476 bytes
SHA-256: `c2f5b1848ff169b31c97a42ada7a437145dc26f40c6d7c3b53e9420ed4832cc1`

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