Malicious PDF — malware analysis report

Static analysis result for SHA-256 8943308e5968ba73…

MALICIOUS

PDF

43.2 KB Created: 2021-05-14 10:33:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 76e8ae9ab88a9fba4dd8887d2d5808cc SHA-1: e405a0d2666fbe0486ad2b59d88ede0e06bfae15 SHA-256: 8943308e5968ba735d5596d66107c617d6b036de93722b55c8a1b266004ba3bf
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links designed to lure users into clicking on them, disguised as offers for free game currency or hacks. The primary redirector URL, https://netcdn.xyz/app/406889139/spins-gratis-coin-master-hoy-game-hack, is flagged as malicious. The document body and embedded links suggest a phishing or scam attempt to drive traffic to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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.xyz/app/406889139/spins-gratis-coin-master-hoy-game-hack In PDF document text
    • http://westt.com.br/ckfinder/userfiles/files/master-coins-free_GM406889139.pdfIn PDF document text
    • http://westt.com.br/ckfinder/userfiles/files/how-to-get-java-minecraft-free_GM479516143.pdfIn PDF document text
    • http://westt.com.br/ckfinder/userfiles/files/how-to-get-free-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://westt.com.br/ckfinder/userfiles/files/bloxpink-free-robux_GM431946152.pdfIn PDF document text
    • http://westt.com.br/ckfinder/userfiles/files/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://westt.com.br/ckfinder/userfiles/files/daily-spin-coin-master-free_GM406889139.pdfIn PDF document text
    • http://westt.com.br/ckfinder/userfiles/files/how-to-get-free-robux-without-offers_GM431946152.pdfIn PDF document text
    • http://westt.com.br/ckfinder/userfiles/files/free-robux-no-password_GM431946152.pdfIn PDF document text
    • http://westt.com.br/ckfinder/userfiles/files/how-to-get-free-followers-on-roblox_GM431946152.pdfIn PDF document text
    • http://westt.com.br/ckfinder/userfiles/files/roblox-hack-site_GM431946152.pdfIn PDF document text
    • http://westt.com.br/ckfinder/userfiles/files/rewards-roblox_GM431946152.pdfIn PDF document text
    • http://westt.com.br/ckfinder/userfiles/files/moonactive-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://westt.com.br/ckfinder/userfiles/files/coin-master-links-2021_GM406889139.pdfIn PDF document text
    • http://westt.com.br/ckfinder/userfiles/files/how-can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://westt.com.br/ckfinder/userfiles/files/coin-master-cheats-2021_GM406889139.pdfIn PDF document text
    • http://westt.com.br/ckfinder/userfiles/files/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://westt.com.br/ckfinder/userfiles/files/gold-cards-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://westt.com.br/ckfinder/userfiles/files/free-coins-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://westt.com.br/ckfinder/userfiles/files/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://westt.com.br/ckfinder/userfiles/files/coin-master-daily-free-spins-and-coins-2021_GM406889139.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
stream_003_off00004a3f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A3F 29184 bytes
SHA-256: c4e03e38ccad2c265d2acd8883dc41db45dc9dca02ce042c13f5a060f031df05
font_01_sfnt_off000087c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87C4 17900 bytes
SHA-256: d9ca9c840088eace307b9f0f2308e23842d7b880bf99d309ad40adeb9b769765

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