PDF malware analysis — malicious · f68224e54ac495be

MALICIOUS

PDF

35.7 KB Created: 2021-07-10 00:46:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04

MD5: f943a71ff5627b7e2a4fc06b4e7f0d0f SHA-1: e11fcce49f9f7d21db95feddfeaeb5cc38a95bd5 SHA-256: f68224e54ac495bea09c07c8d48277b0498f3fe6d167073eeb4aa083e4654a62

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one to a known malicious redirector infrastructure at http://netcdn.tw/app/406889139/coin-master-free-spins-link-blogspot-2021-game-hack. This URL is presented as a 'free generator / game hack' lure, indicating a social engineering attempt to trick users into visiting potentially harmful sites. The ML classifier also strongly flagged this PDF as malicious.

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.tw/app/406889139/coin-master-free-spins-link-blogspot-2021-game-hack In PDF document text
- https://elearning.mtsn9blitar.online/__statics/gudangsoal/files/cheat-roblox-aimbot-arsenal_GM431946152.pdfIn PDF document text
- https://elearning.mtsn9blitar.online/__statics/gudangsoal/files/roblox-free-avatar-makers_GM431946152.pdfIn PDF document text
- https://elearning.mtsn9blitar.online/__statics/gudangsoal/files/coin-master-free-spins-and-coins-today-gift-reward_GM406889139.pdfIn PDF document text
- https://elearning.mtsn9blitar.online/__statics/gudangsoal/files/www-hack-roblox-online_GM431946152.pdfIn PDF document text
- https://elearning.mtsn9blitar.online/__statics/gudangsoal/files/free-spin-coin-master-link-2021_GM406889139.pdfIn PDF document text
- https://elearning.mtsn9blitar.online/__statics/gudangsoal/files/free-robux-admin-codes-2021_GM431946152.pdfIn PDF document text
- https://elearning.mtsn9blitar.online/__statics/gudangsoal/files/hack-mod-of-roblox_GM431946152.pdfIn PDF document text
- https://elearning.mtsn9blitar.online/__statics/gudangsoal/files/cool-boy-hacker-roblox_GM431946152.pdfIn PDF document text
- https://elearning.mtsn9blitar.online/__statics/gudangsoal/files/high-school-life-hacks-roblox_GM431946152.pdfIn PDF document text
- https://elearning.mtsn9blitar.online/__statics/gudangsoal/files/free-roblox-accounts-list-2021_GM431946152.pdfIn PDF document text
- https://elearning.mtsn9blitar.online/__statics/gudangsoal/files/arcane-legacy-roblox-hack_GM431946152.pdfIn PDF document text
- https://elearning.mtsn9blitar.online/__statics/gudangsoal/files/slurp-roblox-hack-download_GM431946152.pdfIn PDF document text
- https://elearning.mtsn9blitar.online/__statics/gudangsoal/files/how-to-hack-money-in-roblox-games_GM431946152.pdfIn PDF document text
- https://elearning.mtsn9blitar.online/__statics/gudangsoal/files/free-robux-real-real_GM431946152.pdfIn PDF document text
- https://elearning.mtsn9blitar.online/__statics/gudangsoal/files/roblox-com-free-download_GM431946152.pdfIn PDF document text
- https://elearning.mtsn9blitar.online/__statics/gudangsoal/files/free-robux-irobuxcom_GM431946152.pdfIn PDF document text
- https://elearning.mtsn9blitar.online/__statics/gudangsoal/files/como-hackear-robux-en-roblox-2021-facil-y-rapido_GM431946152.pdfIn PDF document text
- https://elearning.mtsn9blitar.online/__statics/gudangsoal/files/how-to-votekick-on-free-draw-roblox_GM431946152.pdfIn PDF document text
- https://elearning.mtsn9blitar.online/__statics/gudangsoal/files/free-roblox-account-2021_GM431946152.pdfIn PDF document text
- https://elearning.mtsn9blitar.online/__statics/gudangsoal/files/how-to-download-hacks-in-roblox-high-school_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_off000033cb.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x33CB	22680 bytes
SHA-256: `7a3b78d6f6af3a40d99baaf41eec6c9bf2ce24fa20da6bb30e9f22e2b7800ea4`
`font_01_sfnt_off000066a4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x66A4	19036 bytes
SHA-256: `f868d1b4b008750abeb491aae720fc8315e02cd8dd3bcefbbcb1193d1ab016b5`

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