PDF malware analysis — malicious · 4e3c000410e8b84a

MALICIOUS

PDF

34.2 KB Created: 2021-06-27 15:30:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-19

MD5: dd6611408a878736e794beedeabe828f SHA-1: e952cc26f011425cd6710c1428250ff3447e9d6e SHA-256: 4e3c000410e8b84a6eb75e1da376edad766d5b7da4c35baf0df60292e971e5f9

160 Risk Score

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-hd-admin-commands-script-hack-game-hack In PDF document text
- https://www.astrospace.com.tw/upload/files/roblox-champl-dll-hack-download_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/coin-master-free-spin-and-coin_GM406889139.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/roblox-hack-tool-robux-and-tickets-hack_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/2021-hacking-roblox_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/free-coin-master-cards_GM406889139.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/how-to-get-roebucks_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/roboxy-com-free-robux_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/roblox-wall-hack-jailbreak_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/free-robux-generator-codes_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/coin-master-free-cards-link_GM406889139.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/free-robux-2021_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/latest-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/free-robux-generator-no-verification_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/lazy-blocks-com-free-robux_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/coin-master-free-spins-youthnow_GM406889139.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/free-knife-cbro-roblox_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/roblox-hacks-extensions_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/coin-master-free-spins-link-download-hack_GM406889139.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/how-can-i-get-minecraft-for-free_GM479516143.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/how-to-download-minecraft-for-free-on-iphone_GM479516143.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_off00002d37.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2D37	22528 bytes
SHA-256: `8c51cc68c7ad341e582703adca7a06b7933a0d5cd87462a06c7bc29c8a0318e2`
`font_01_sfnt_off00005f52.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5F52	19488 bytes
SHA-256: `e95174669e31c7801f27c1af7cef5debfd317a045b8ff0a3439f12b24a79594c`

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