Malicious PDF — malware analysis report

Static analysis result for SHA-256 950b3074791b6f62…

MALICIOUS

PDF

46.2 KB Created: 2021-06-09 15:25:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 4f66c72edd921f937fdbebd6125c2338 SHA-1: 47ecb39e5f19fa33ec4d7decf09aed663ad74935 SHA-256: 950b3074791b6f6277f22498990c7ced2d0cf3938a4c53059ed41cc8b088d336
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a 'free generator / game hack' which is a known malicious redirector. This lure is designed to trick users into visiting a potentially harmful site. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the embedded URL and heuristic firings are sufficient to determine the attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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.tw/app/431946152/hacked-roblox-face-game-hack In PDF document text
    • http://www.thalanghospital.go.th/UserFiles/File/free-admin-roblox_GM431946152.pdfIn PDF document text
    • http://www.thalanghospital.go.th/UserFiles/File/coin-master-free-link-spin_GM406889139.pdfIn PDF document text
    • http://www.thalanghospital.go.th/UserFiles/File/free-coin-master-hacks-no-verification_GM406889139.pdfIn PDF document text
    • http://www.thalanghospital.go.th/UserFiles/File/get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.thalanghospital.go.th/UserFiles/File/coin-master-free-spins-and-free-coins_GM406889139.pdfIn PDF document text
    • http://www.thalanghospital.go.th/UserFiles/File/minecraft-for-macbook-free_GM479516143.pdfIn PDF document text
    • http://www.thalanghospital.go.th/UserFiles/File/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.thalanghospital.go.th/UserFiles/File/reddit-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.thalanghospital.go.th/UserFiles/File/coin-master-free-spins-haktuts_GM406889139.pdfIn PDF document text
    • http://www.thalanghospital.go.th/UserFiles/File/minecraft-free-download-android_GM479516143.pdfIn PDF document text
    • http://www.thalanghospital.go.th/UserFiles/File/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • http://www.thalanghospital.go.th/UserFiles/File/how-to-get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://www.thalanghospital.go.th/UserFiles/File/free-24-7-minecraft-server_GM479516143.pdfIn PDF document text
    • http://www.thalanghospital.go.th/UserFiles/File/free-robux-net_GM431946152.pdfIn PDF document text
    • http://www.thalanghospital.go.th/UserFiles/File/minecraft-toolbox-premium-apk_GM479516143.pdfIn PDF document text
    • http://www.thalanghospital.go.th/UserFiles/File/roblox-skins-boy-free_GM431946152.pdfIn PDF document text
    • http://www.thalanghospital.go.th/UserFiles/File/roblox-troll-outfits-free_GM431946152.pdfIn PDF document text
    • http://www.thalanghospital.go.th/UserFiles/File/coin-master-cheats-for-free-spins_GM406889139.pdfIn PDF document text
    • http://www.thalanghospital.go.th/UserFiles/File/coin-master-free-spin-link-today-50_GM406889139.pdfIn PDF document text
    • http://www.thalanghospital.go.th/UserFiles/File/how-to-get-free-robux-gift-cards_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005287.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5287 27440 bytes
SHA-256: 1387c4d87731eecd6735f3ef5146650b1b2fdbe0346a54a5db0418f13d8be52f
font_01_sfnt_off0000915a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x915A 18520 bytes
SHA-256: d20841a43ae139b12d2661a672a4a11ce7256199a632754587cd496b601825ff

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