Malicious PDF — malware analysis report

Static analysis result for SHA-256 21ceb4f099b400e3…

MALICIOUS

PDF

41.8 KB Created: 2021-05-16 05:31:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ce50f1bef7114c61eaceba771816b4fc SHA-1: 5d7e4e0e40e02400857803c24be5eb03597eed14 SHA-256: 21ceb4f099b400e341df5dbc3ea22cb4592de386a6f578fdea387ed8a656c93e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure related to game hacks and free in-game currency to entice users. It contains multiple embedded URLs that redirect to potentially malicious content, including a primary link identified as a known malicious redirector. The document's structure and embedded links suggest an attempt to lead the user to a site that may host further malware or phishing content.

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/ultimate-free-spins-coin-master-game-hack In PDF document text
    • https://www.sensationboats.com/images/free-robux-hack_GM431946152.pdfIn PDF document text
    • https://www.sensationboats.com/images/coin-master-hack-game-download_GM406889139.pdfIn PDF document text
    • https://www.sensationboats.com/images/easy-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.sensationboats.com/images/download-hack-coin-master-apk_GM406889139.pdfIn PDF document text
    • https://www.sensationboats.com/images/free-robux-instantly_GM431946152.pdfIn PDF document text
    • https://www.sensationboats.com/images/coinmaster-blogspot_GM406889139.pdfIn PDF document text
    • https://www.sensationboats.com/images/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://www.sensationboats.com/images/roblox-promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • https://www.sensationboats.com/images/cute-free-stuff-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.sensationboats.com/images/roblox-hack-download_GM431946152.pdfIn PDF document text
    • https://www.sensationboats.com/images/free-girl-hair-roblox_GM431946152.pdfIn PDF document text
    • https://www.sensationboats.com/images/daily-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.sensationboats.com/images/free-spins-and-coins-from-coin-master-game_GM406889139.pdfIn PDF document text
    • https://www.sensationboats.com/images/roblox-avatar-com_GM431946152.pdfIn PDF document text
    • https://www.sensationboats.com/images/minecraft-creative-mode-free_GM479516143.pdfIn PDF document text
    • https://www.sensationboats.com/images/get-free-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.sensationboats.com/images/free-spin-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.sensationboats.com/images/free-robux-offers_GM431946152.pdfIn PDF document text
    • https://www.sensationboats.com/images/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
    • https://www.sensationboats.com/images/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://coinmasterspinandcoin.comIn 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_off00004827.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4827 24704 bytes
SHA-256: ba2b2db369c363c280d8d7e2a897cfa6e711b75d7adc2dcac23214eceaf64a1d
font_01_sfnt_off000080f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80F6 18408 bytes
SHA-256: 069e81d139e88509d82e8224148cc48daf359350e2997d733607192457d28ec7

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