Malicious PDF — malware analysis report

Static analysis result for SHA-256 906718fd4ca5937b…

MALICIOUS

PDF

45.6 KB Created: 2021-05-14 06:18:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 37dd68a848407ea483c6cb05e523d5a8 SHA-1: a439b945709d41c6f1491f07a279785eabe62a3d SHA-256: 906718fd4ca5937b664818828e0772564e5c2a3456584d24e332208154faeee1
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, specifically designed to lure users with promises of free in-game currency or hacks. The ML classifier strongly flagged this PDF as malicious. The embedded URLs likely lead to further malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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/431946152/robux-in-game-hack In PDF document text
    • https://ccej.lviv.ua/images/free-coin-master-spins-2021-link_GM406889139.pdfIn PDF document text
    • https://ccej.lviv.ua/images/free-robux-no-human-verification-generator_GM431946152.pdfIn PDF document text
    • https://ccej.lviv.ua/images/coin-master-free-spins-and-coins-daily_GM406889139.pdfIn PDF document text
    • https://ccej.lviv.ua/images/coin-master-hack-spin-generator-tool_GM406889139.pdfIn PDF document text
    • https://ccej.lviv.ua/images/coin-master-hacked-apk-download-for-android_GM406889139.pdfIn PDF document text
    • https://ccej.lviv.ua/images/minecraft-for-chromebook-free_GM479516143.pdfIn PDF document text
    • https://ccej.lviv.ua/images/free-2021-robux_GM431946152.pdfIn PDF document text
    • https://ccej.lviv.ua/images/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • https://ccej.lviv.ua/images/apps-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://ccej.lviv.ua/images/how-to-get-a-cape-in-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://ccej.lviv.ua/images/minecraft-app-store-free_GM479516143.pdfIn PDF document text
    • https://ccej.lviv.ua/images/free-rare-cards-for-coin-master-christmas_GM406889139.pdfIn PDF document text
    • https://ccej.lviv.ua/images/coin-master-free-spins--coins-2021_GM406889139.pdfIn PDF document text
    • https://ccej.lviv.ua/images/coin-master-fan-hack_GM406889139.pdfIn PDF document text
    • https://ccej.lviv.ua/images/roblox-robux_GM431946152.pdfIn PDF document text
    • https://ccej.lviv.ua/images/blogspot-coin-master_GM406889139.pdfIn PDF document text
    • https://ccej.lviv.ua/images/free-roblox-toy-codes-2021_GM431946152.pdfIn PDF document text
    • https://ccej.lviv.ua/images/free-spin-link-coin-master-app_GM406889139.pdfIn PDF document text
    • https://ccej.lviv.ua/images/moonactive-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://ccej.lviv.ua/images/coin-master-free-spins-link-today-new-2021_GM406889139.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_off000049a4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49A4 30656 bytes
SHA-256: 92db100a75ac69ecdd39320ecb06afcef03b718f48cd1351625fb618324e3d78
font_01_sfnt_off0000917e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x917E 17852 bytes
SHA-256: 7ee051f4e2d26a9a04c66646782e9314ee13ce973b90acfdb1eca38aa40a5769

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