Malicious PDF — malware analysis report

Static analysis result for SHA-256 50202b75a1945333…

MALICIOUS

PDF

34.1 KB Created: 2021-07-05 17:54:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a3fb268c309e9f367dd3383cfc47ab9d SHA-1: 7a97944ac28b8c0d847b220275d5a29f29c6ff86 SHA-256: 50202b75a1945333b9531f4f2b56514633927ad8063f1ac9caa1ac58c60f2b93
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains embedded URLs and a document body that explicitly advertises '40 Free Spins Coin Master' and related game hacks. The primary external URI points to 'netcdn.tw/app/406889139/40-free-spins-coin-master-game-hack', suggesting a lure to download a malicious application or exploit. The ML classifier strongly flagged this PDF as malicious, supporting the suspicious nature of the content.

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/406889139/40-free-spins-coin-master-game-hack In PDF document text
    • http://slims.abulyatama.ac.id/repository/coin-master-hack-without-verification-code-2021_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/roblox-hack-apk-no-human-verification_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/free-shades-in-roblox_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/roblox-insert-tool-hack_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/coin-master-2021-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/roblox-studio-hack_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/one-piece-treasure-hack-roblox_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/www-robux-us_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/free-robux-eith-no-verifications_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/roblox-org-free-robux_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/free-robux-with-only-username_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/roblox-free-robux-obby_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/free-robux-2021-no-verification_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/coin-master-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/roblox-games-online-free-play_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/how-to-get-800-robux-for-free_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/javascript-code-roblox-hack_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/best-way-to-get-robux_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
stream_002_off00002f2b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2F2B 22832 bytes
SHA-256: 08c5eb718a6de3b9f4f7753ed0069b2244f0b4396bc3f319e94b9e1757d81519
font_01_sfnt_off00006244.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6244 18408 bytes
SHA-256: ce82454962f5f3d8f32b8d714c7dfb82c9591ccd0919bf0a26c63f76146bf830

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