Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d63d5b755d9aef4…

MALICIOUS

PDF

43.4 KB Created: 2021-05-12 05:07:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 379bd953ae4243e228b0a83999c1620c SHA-1: ea2c5e32648f9941103dff5596dfc8489602f32e SHA-256: 0d63d5b755d9aef4319c5b2cf3c52fd76cf5f0e498fe4b71cb7621340e5304af
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors and sites offering game hacks and currency generators. The primary link, https://netcdn.xyz/app/406889139/coin-master-hack-download-android-game-hack, is identified as a malicious redirector. The document's content and embedded links strongly suggest a phishing or scam attempt designed to lure users to malicious websites.

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/coin-master-hack-download-android-game-hack In PDF document text
    • https://osk-sibir.ru/images/best-free-robux-sites_GM431946152.pdfIn PDF document text
    • https://osk-sibir.ru/images/coin-master-daily_GM406889139.pdfIn PDF document text
    • https://osk-sibir.ru/images/hacks-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://osk-sibir.ru/images/how-to-get-free-robux-no-survey_GM431946152.pdfIn PDF document text
    • https://osk-sibir.ru/images/best-free-spin-app-for-coin-master_GM406889139.pdfIn PDF document text
    • https://osk-sibir.ru/images/how-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://osk-sibir.ru/images/coin-master-hack-tool-pc_GM406889139.pdfIn PDF document text
    • https://osk-sibir.ru/images/wurst-hacked-client-112-2_GM479516143.pdfIn PDF document text
    • https://osk-sibir.ru/images/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://osk-sibir.ru/images/hack-coin-master-game-download_GM406889139.pdfIn PDF document text
    • https://osk-sibir.ru/images/minecraft-pe-apk-download_GM479516143.pdfIn PDF document text
    • https://osk-sibir.ru/images/free-google-play-promo-codes-coin-master_GM406889139.pdfIn PDF document text
    • https://osk-sibir.ru/images/how-to-create-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://osk-sibir.ru/images/www-robux-us_GM431946152.pdfIn PDF document text
    • https://osk-sibir.ru/images/roblox-pink-free-robux_GM431946152.pdfIn PDF document text
    • https://osk-sibir.ru/images/free-robux-no-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://osk-sibir.ru/images/download-coin-master-apk-hack_GM406889139.pdfIn PDF document text
    • https://osk-sibir.ru/images/play-coin-master-for-free_GM406889139.pdfIn PDF document text
    • https://osk-sibir.ru/images/get-free-robux-gg_GM431946152.pdfIn PDF document text
    • https://osk-sibir.ru/images/roblox-login-hack_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000049c5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49C5 29316 bytes
SHA-256: 7216612d4002044fc0b8d3a548e0ec4e0c04dc44139d4257be6307ea0a2708bb
font_01_sfnt_off00008723.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8723 18296 bytes
SHA-256: 191b71f27c87c49ec840916d543df80ed5baa55fcebbf61f3d10def48a18baf7

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