PDF malware analysis — malicious · c3f3ef6a91366c23

MALICIOUS

PDF

35.4 KB Created: 2021-07-02 06:01:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04

MD5: 76458dd584bd413f58d8a251ff91f573 SHA-1: cef38b0daf1305b51c8a5279be4ec0d629236eb7 SHA-256: c3f3ef6a91366c23ecf8df4901ff7bd8ec5e1c549dbfb57dd8c6cf35d1fdb4e2

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF file contains multiple links designed to lure users into clicking on what appears to be a free game hack or generator. The primary link redirects to known malicious infrastructure, indicating a phishing or scam attempt. The ML classifier also flagged this PDF as malicious with high confidence.

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/madcity-free-server-private-roblox-game-hack In PDF document text
- https://www.lifegoeson.in/uploaded_files/userfiles/files/free-robux-generator-2021_GM431946152.pdfIn PDF document text
- https://www.lifegoeson.in/uploaded_files/userfiles/files/free-things-on-roblox-2021_GM431946152.pdfIn PDF document text
- https://www.lifegoeson.in/uploaded_files/userfiles/files/coin-master-hack-lost-world-2021_GM406889139.pdfIn PDF document text
- https://www.lifegoeson.in/uploaded_files/userfiles/files/minecraft-hacks-for-2b2t_GM479516143.pdfIn PDF document text
- https://www.lifegoeson.in/uploaded_files/userfiles/files/free-robux-codes_GM431946152.pdfIn PDF document text
- https://www.lifegoeson.in/uploaded_files/userfiles/files/free-free-robux_GM431946152.pdfIn PDF document text
- https://www.lifegoeson.in/uploaded_files/userfiles/files/roblox-build-a-boat-for-treasure-venom-cheats_GM431946152.pdfIn PDF document text
- https://www.lifegoeson.in/uploaded_files/userfiles/files/coin-master-free-spins-and-coins-today-gift-reward_GM406889139.pdfIn PDF document text
- https://www.lifegoeson.in/uploaded_files/userfiles/files/free-roblox-accounts-with-robux-2021_GM431946152.pdfIn PDF document text
- https://www.lifegoeson.in/uploaded_files/userfiles/files/how-to-hack-robux-with-cheat-engine-2021_GM431946152.pdfIn PDF document text
- https://www.lifegoeson.in/uploaded_files/userfiles/files/is-roblox-hacked_GM431946152.pdfIn PDF document text
- https://www.lifegoeson.in/uploaded_files/userfiles/files/free-hair-roblox-2021_GM431946152.pdfIn PDF document text
- https://www.lifegoeson.in/uploaded_files/userfiles/files/how-to-gain-more-spins-on-coin-master-for-free_GM406889139.pdfIn PDF document text
- https://www.lifegoeson.in/uploaded_files/userfiles/files/free-gravity-coil-in-roblox_GM431946152.pdfIn PDF document text
- https://www.lifegoeson.in/uploaded_files/userfiles/files/promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
- https://www.lifegoeson.in/uploaded_files/userfiles/files/ninja-hack-club-roblox_GM431946152.pdfIn PDF document text
- https://www.lifegoeson.in/uploaded_files/userfiles/files/free-robux-without-offers_GM431946152.pdfIn PDF document text
- https://www.lifegoeson.in/uploaded_files/userfiles/files/free-modded-minecraft-server_GM479516143.pdfIn PDF document text
- https://www.lifegoeson.in/uploaded_files/userfiles/files/city-17-roblox-token-hack_GM431946152.pdfIn PDF document text
- https://www.lifegoeson.in/uploaded_files/userfiles/files/free-coin-spin-daily-link-for-coin-master-game_GM406889139.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_off000031f8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x31F8	22700 bytes
SHA-256: `b02ac01a846e1d655051245006e37d0be6d4af3e6ab41fbb6606a76c8ee9c168`
`font_01_sfnt_off000063a4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x63A4	19692 bytes
SHA-256: `8ca9680ac4758202f39ba4f8fbdaee3664e0987c8f7778f5ed83135610898b8a`

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