Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc55ce66800179ef…

MALICIOUS

PDF

41.7 KB Created: 2021-05-15 15:13:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 0058cae0848849afe5c4a1f3ad6dca87 SHA-1: 8c8c6ad0179fcde4d21002bc7f9446e02e53ae9a SHA-256: bc55ce66800179ef8100afa10283890d564d358133a6922216adb1fa04008666
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to redirector domains, masquerading as game hacks and free spins. The primary lure URL, https://netcdn.xyz/app/406889139/coin-master-free-spins-link-2021-twitter-game-hack, is associated with malicious redirector infrastructure. The document body and embedded URLs suggest a social engineering tactic to trick users into visiting potentially malicious websites. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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-spins-link-2021-twitter-game-hack In PDF document text
    • http://zagorjeadventureteam.hr/files/how-to-hack-coins-in-mcpe-master_GM406889139.pdfIn PDF document text
    • http://zagorjeadventureteam.hr/files/clients-minecraft_GM479516143.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/spin-coin-master-free_GM406889139.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/roblox-demon_GM431946152.pdfIn PDF document text
    • http://zagorjeadventureteam.hr/files/roblox-generator-com_GM431946152.pdfIn PDF document text
    • http://zagorjeadventureteam.hr/files/how-to-download-minecraft-for-free-on-windows_GM479516143.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/free-robux-no-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/roblox-games-free_GM431946152.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/coin-master-heaven-free-spins_GM406889139.pdfIn PDF document text
    • http://zagorjeadventureteam.hr/files/coin-master-tool-hack_GM406889139.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/wurst-client_GM479516143.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/sb-game-hacker-coin-master_GM406889139.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/free-spin-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/coin-master-free-spins-only_GM406889139.pdfIn PDF document text
    • http://zagorjeadventureteam.hr/files/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://zagorjeadventureteam.hr/files/coin-master-hack-tool-ios_GM406889139.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/coin-master-60-spins_GM406889139.pdfIn PDF document text
    • http://zagorjeadventureteam.hr/files/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • http://zagorjeadventureteam.hr/files/withdraw-robux_GM431946152.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/minecraft-story-mode-free-download_GM479516143.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_off0000476c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x476C 24704 bytes
SHA-256: d5b26dd27475455227b7584b05a92864282d2d1aa26bd13e131f97d8db9b7c08
font_01_sfnt_off00007f3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F3C 18624 bytes
SHA-256: 2a222fa7736cc624854c57ea31ed5889d6e2ab16aa32c0d7c4a050f5b2ef3bb0

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