Malicious PDF — malware analysis report

Static analysis result for SHA-256 35178cc1951ee6ae…

MALICIOUS

PDF

42.5 KB Created: 2021-05-14 22:00:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 313eca55fdc65b50e1ebbc3a579c68e9 SHA-1: 757b9e348a1ce8b5e5132ec4717a50b7db800f79 SHA-256: 35178cc1951ee6aeecc7dcdcd144e70ed395a1466ca61b562e7ebbd4b76b1c31
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to malicious infrastructure, specifically promoting 'free generator / game hack' lures. The ML classifier also flagged this PDF with high confidence. The primary IOC is the initial redirector URL, which likely leads to a further malicious payload or phishing page.

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/479516143/minecraft-beta-free-game-hack In PDF document text
    • https://www.lwctrust.co.uk/admin/ckfinder/userfiles/files/mcpe-hack-client_GM479516143.pdfIn PDF document text
    • https://www.lwctrust.co.uk/admin/ckfinder/userfiles/files/coin-master-free-spins-and-coins-link-today_GM406889139.pdfIn PDF document text
    • https://www.lwctrust.co.uk/admin/ckfinder/userfiles/files/free-coins-and-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.lwctrust.co.uk/admin/ckfinder/userfiles/files/free-robux-ad_GM431946152.pdfIn PDF document text
    • https://www.lwctrust.co.uk/admin/ckfinder/userfiles/files/hack-to-send-gold-cards-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.lwctrust.co.uk/admin/ckfinder/userfiles/files/coin-master-free-gold_GM406889139.pdfIn PDF document text
    • https://www.lwctrust.co.uk/admin/ckfinder/userfiles/files/robux-hacks-2021_GM431946152.pdfIn PDF document text
    • https://www.lwctrust.co.uk/admin/ckfinder/userfiles/files/coin-master-hack-no-root_GM406889139.pdfIn PDF document text
    • https://www.lwctrust.co.uk/admin/ckfinder/userfiles/files/how-to-get-free-robux-on-phone_GM431946152.pdfIn PDF document text
    • https://www.lwctrust.co.uk/admin/ckfinder/userfiles/files/roblox-hacks-for-mac_GM431946152.pdfIn PDF document text
    • https://www.lwctrust.co.uk/admin/ckfinder/userfiles/files/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • https://www.lwctrust.co.uk/admin/ckfinder/userfiles/files/how-to-free-robux_GM431946152.pdfIn PDF document text
    • https://www.lwctrust.co.uk/admin/ckfinder/userfiles/files/coin-master-daily-free-spins_GM406889139.pdfIn PDF document text
    • https://www.lwctrust.co.uk/admin/ckfinder/userfiles/files/roblox-com-free-play_GM431946152.pdfIn PDF document text
    • https://www.lwctrust.co.uk/admin/ckfinder/userfiles/files/my-roblox-account-was-hacked_GM431946152.pdfIn PDF document text
    • https://www.lwctrust.co.uk/admin/ckfinder/userfiles/files/free-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • https://www.lwctrust.co.uk/admin/ckfinder/userfiles/files/coin-master-hack-tool-download_GM406889139.pdfIn PDF document text
    • https://www.lwctrust.co.uk/admin/ckfinder/userfiles/files/rbx-free-robux_GM431946152.pdfIn PDF document text
    • https://www.lwctrust.co.uk/admin/ckfinder/userfiles/files/free-roblox-accounts-dantdm_GM431946152.pdfIn PDF document text
    • https://www.lwctrust.co.uk/admin/ckfinder/userfiles/files/free-spins-coin-master-links-app_GM406889139.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_off00004b46.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B46 25640 bytes
SHA-256: 7e48ad987008ed876f5783138e727668dc13736e98da97de3db3ba2d00443474
font_01_sfnt_off00008571.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8571 17784 bytes
SHA-256: ffa4e944bc3952cb658e805fb11da1f643d70f63a75572cc293d8aa9f3ac184d

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