PDF malware analysis — malicious · 7441f277f9fa8851

MALICIOUS

PDF

34.4 KB Created: 2021-06-30 21:49:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04

MD5: 321f309535ece58f1e493465d6ede72c SHA-1: 2004732c798cec80644fb9ca80438a965fa682e3 SHA-256: 7441f277f9fa88513fbc73bdb45a3489e060a8c35de785b0be03640bac3f7ead

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'game hacks' and 'free generators' for popular games. The primary lure appears to be related to Roblox and Coin Master, with the embedded URL http://netcdn.co/app/431946152/roblox-online-game-free-play-game-hack serving as a redirector to further malicious content. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a phishing or scam attempt designed to lead users to potentially harmful sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/roblox-online-game-free-play-game-hack In PDF document text
- https://linhkien247.vn/public/upload/files/hack-roblox-mad_GM431946152.pdfIn PDF document text
- https://linhkien247.vn/public/upload/files/rbxoffers-earn-free-robux_GM431946152.pdfIn PDF document text
- https://linhkien247.vn/public/upload/files/blogspot-coin-master-spins_GM406889139.pdfIn PDF document text
- https://linhkien247.vn/public/upload/files/be-a-hacker-on-roblox_GM431946152.pdfIn PDF document text
- https://linhkien247.vn/public/upload/files/how-to-hack-roblox_GM431946152.pdfIn PDF document text
- https://linhkien247.vn/public/upload/files/coin-master-hack-tool-v1-9-download-free-pc_GM406889139.pdfIn PDF document text
- https://linhkien247.vn/public/upload/files/hack-script-roblox-booga-booga_GM431946152.pdfIn PDF document text
- https://linhkien247.vn/public/upload/files/coin-master-daily-free-link_GM406889139.pdfIn PDF document text
- https://linhkien247.vn/public/upload/files/free-spin-sites-for-coin-master_GM406889139.pdfIn PDF document text
- https://linhkien247.vn/public/upload/files/beautiful-hair-roblox-free_GM431946152.pdfIn PDF document text
- https://linhkien247.vn/public/upload/files/roblox-arsenal-hacks-download_GM431946152.pdfIn PDF document text
- https://linhkien247.vn/public/upload/files/free-robux-easy-steps_GM431946152.pdfIn PDF document text
- https://linhkien247.vn/public/upload/files/free-tiktok-likes-app_GM835599320.pdfIn PDF document text
- https://linhkien247.vn/public/upload/files/is-roblox-studio-free_GM431946152.pdfIn PDF document text
- https://linhkien247.vn/public/upload/files/free-pet-treats-coin-master_GM406889139.pdfIn PDF document text
- https://linhkien247.vn/public/upload/files/facebook-coin-master_GM406889139.pdfIn PDF document text
- https://linhkien247.vn/public/upload/files/robux-hack-me_GM431946152.pdfIn PDF document text
- https://linhkien247.vn/public/upload/files/money-hack-jailbreak-roblox_GM431946152.pdfIn PDF document text
- https://linhkien247.vn/public/upload/files/how-do-you-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
- https://linhkien247.vn/public/upload/files/free-robux-hack-no-verification_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_off00002cf1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2CF1	22940 bytes
SHA-256: `7ea087a308e992d7edf38d373804d6d1bb8be38285a652fe4171613ef1594a06`
`font_01_sfnt_off000060b1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x60B1	19364 bytes
SHA-256: `0a7e5ac6898e10751fbf3a161ca7cb2c6b700527f84b559853cfc15741a98d5c`

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