Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ad9c5f60de08643…

MALICIOUS

PDF

40.9 KB Created: 2021-05-17 05:08:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 8c94f5c849890d0920771997e61e8975 SHA-1: 24017f1bcb441dd3af3cb17991f94e23cb1d69db SHA-256: 1ad9c5f60de086437ebf93a457ae756989c6e5d143f9c1432dc93009661f74a8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to known malicious infrastructure, specifically promoting "Coin Master Claim Free Spins" and "Robux" generators. The document body and heuristics indicate a lure for game-related cheats or currency, designed to lead users to malicious sites. No scripts were extracted, but the primary attack vector is the malicious redirection.

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-claim-free-spins-game-hack In PDF document text
    • http://mou16-murmansk.ru/images/www-roblox-robux_GM431946152.pdfIn PDF document text
    • http://mou16-murmansk.ru/images/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • http://mou16-murmansk.ru/images/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://mou16-murmansk.ru/images/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://mou16-murmansk.ru/images/download-apps-for-robux_GM431946152.pdfIn PDF document text
    • http://mou16-murmansk.ru/images/coin-master-hack-spin-160-pro_GM406889139.pdfIn PDF document text
    • http://mou16-murmansk.ru/images/robux-free-co_GM431946152.pdfIn PDF document text
    • http://mou16-murmansk.ru/images/how-to-get-free-robux-on-phone-2021_GM431946152.pdfIn PDF document text
    • http://mou16-murmansk.ru/images/roblox-fun-com-free-robux_GM431946152.pdfIn PDF document text
    • http://mou16-murmansk.ru/images/free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • http://mou16-murmansk.ru/images/how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://mou16-murmansk.ru/images/free-robux-quiz_GM431946152.pdfIn PDF document text
    • http://mou16-murmansk.ru/images/coin-master-free-spins-coins_GM406889139.pdfIn PDF document text
    • http://mou16-murmansk.ru/images/best-site-for-free-coin-master_GM406889139.pdfIn PDF document text
    • http://mou16-murmansk.ru/images/coin-master-free-spin-daily-link_GM406889139.pdfIn PDF document text
    • http://mou16-murmansk.ru/images/how-to-make-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://mou16-murmansk.ru/images/free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • http://mou16-murmansk.ru/images/microsoft-free-robux_GM431946152.pdfIn PDF document text
    • http://mou16-murmansk.ru/images/how-to-hack-to-get-robux_GM431946152.pdfIn PDF document text
    • http://mou16-murmansk.ru/images/microsoft-rewards-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_003_off00004639.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4639 24216 bytes
SHA-256: a0e53a8f540148dbecb7217346319278297df47ce5293b8935d9e5da54a07184
font_01_sfnt_off00007dcb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DCB 18220 bytes
SHA-256: 4508a7247666ecd7f475af3e2510e2d7297b60fda6d209b486c2dc6be28a63e8

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