Malicious PDF — malware analysis report

Static analysis result for SHA-256 b23bee86af7e7cb7…

MALICIOUS

PDF

51.8 KB Created: 2021-05-13 04:35:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: cb1f97fd43f8a8cd4098782e24ff2152 SHA-1: 362cafbc12a4213ba5c46a7257399484add7ec3e SHA-256: b23bee86af7e7cb71bded96c24ed01c2a2c7f17557c683e09c7de9896aa0a1d5
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting "game hacks" and "free spins" for popular games. The primary malicious link identified is https://netcdn.xyz/app/406889139/coin-master-free-spin-daily-link-game-hack. The document's content and embedded links strongly suggest a phishing or scam attempt designed to trick users into visiting potentially harmful websites. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8646

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/coin-master-free-spin-daily-link-game-hack In PDF document text
    • https://elearning.mtsalmanar.com/__statics/gudangsoal/files/free-spins-coins-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsalmanar.com/__statics/gudangsoal/files/hack-coin-master-iphone_GM406889139.pdfIn PDF document text
    • https://elearning.mtsalmanar.com/__statics/gudangsoal/files/how-to-get-1-million-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsalmanar.com/__statics/gudangsoal/files/avatar-de-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsalmanar.com/__statics/gudangsoal/files/minecraft-reach-hack_GM479516143.pdfIn PDF document text
    • https://elearning.mtsalmanar.com/__statics/gudangsoal/files/hack-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsalmanar.com/__statics/gudangsoal/files/free-roblox-scripts_GM431946152.pdfIn PDF document text
    • https://elearning.mtsalmanar.com/__statics/gudangsoal/files/twitter-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • https://elearning.mtsalmanar.com/__statics/gudangsoal/files/how-to-get-free-robux-easy_GM431946152.pdfIn PDF document text
    • https://elearning.mtsalmanar.com/__statics/gudangsoal/files/minecraft-free-download-mobile_GM479516143.pdfIn PDF document text
    • https://elearning.mtsalmanar.com/__statics/gudangsoal/files/coin-master-free-chip_GM406889139.pdfIn PDF document text
    • https://elearning.mtsalmanar.com/__statics/gudangsoal/files/blogspot-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://elearning.mtsalmanar.com/__statics/gudangsoal/files/free-robux-place_GM431946152.pdfIn PDF document text
    • https://elearning.mtsalmanar.com/__statics/gudangsoal/files/minecraft-pocket-apk_GM479516143.pdfIn PDF document text
    • https://elearning.mtsalmanar.com/__statics/gudangsoal/files/coin-master-free-spins-16-04-19_GM406889139.pdfIn PDF document text
    • https://elearning.mtsalmanar.com/__statics/gudangsoal/files/microsoft-rewards-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsalmanar.com/__statics/gudangsoal/files/legit-coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • https://elearning.mtsalmanar.com/__statics/gudangsoal/files/free-coin-master-coins-and-spins_GM406889139.pdfIn PDF document text
    • https://elearning.mtsalmanar.com/__statics/gudangsoal/files/free-spin-coin-master-twitter_GM406889139.pdfIn PDF document text
    • https://elearning.mtsalmanar.com/__statics/gudangsoal/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004c8e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C8E 26332 bytes
SHA-256: 704f25c4a5e7171d29556f6cfc6a043af8b5c6e1ff663a656d4be874b1d43270
font_01_sfnt_off0000889b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x889B 3820 bytes
SHA-256: fa56264fd04287589dcec548e2d31d7e94f0b33765a78886a499d244b69b69dd
font_02_sfnt_off00009531.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9531 7332 bytes
SHA-256: d811e0aca85f3b94c42cd1240eec68b8eb378f3d8be5e408d3f6abd0f11f834d
font_03_sfnt_off0000a749.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA749 18476 bytes
SHA-256: 2ce97cbb308bf5ba938525f141fd625062fba94b419d6e9602582d12aef06769

Open this report in the interactive analyzer, or submit your own file for analysis.