Malicious PDF — malware analysis report

Static analysis result for SHA-256 1822c10d0f6ed871…

MALICIOUS

PDF

34.7 KB Created: 2021-06-22 18:52:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 736b3de277c6f7b90c17310cac9033c3 SHA-1: e220fac7bb81799c73108a8cb8afa430165dcc0f SHA-256: 1822c10d0f6ed871b42c0d469ba6a86f95a3a2dc2c7efabedb3a7cb960a357ec
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to websites offering game hacks and free currency, identified as a lure for malicious redirection. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' and the presence of numerous suspicious URLs strongly indicate a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the document's structure and embedded URLs suggest it's designed to redirect users to potentially harmful content, likely as part of a phishing campaign.

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 http://netcdn.co/app/406889139/coin-master-free-cards-link-2021-game-hack In PDF document text
    • https://nedowningbrochure.co.uk/admin/ckfinder/userfiles/files/roblox-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://nedowningbrochure.co.uk/admin/ckfinder/userfiles/files/free-minecraft-hosting-24-7_GM479516143.pdfIn PDF document text
    • https://nedowningbrochure.co.uk/admin/ckfinder/userfiles/files/coin-master-spin-pattern_GM406889139.pdfIn PDF document text
    • https://nedowningbrochure.co.uk/admin/ckfinder/userfiles/files/free-minecraft-account-and-password_GM479516143.pdfIn PDF document text
    • https://nedowningbrochure.co.uk/admin/ckfinder/userfiles/files/free-robux-sites-2021_GM431946152.pdfIn PDF document text
    • https://nedowningbrochure.co.uk/admin/ckfinder/userfiles/files/is-there-a-free-version-of-minecraft_GM479516143.pdfIn PDF document text
    • https://nedowningbrochure.co.uk/admin/ckfinder/userfiles/files/how-do-i-get-free-robux_GM431946152.pdfIn PDF document text
    • https://nedowningbrochure.co.uk/admin/ckfinder/userfiles/files/coin-master-mod-version-free-download-v344_GM406889139.pdfIn PDF document text
    • https://nedowningbrochure.co.uk/admin/ckfinder/userfiles/files/links-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://nedowningbrochure.co.uk/admin/ckfinder/userfiles/files/hacker-programm-roblox_GM431946152.pdfIn PDF document text
    • https://nedowningbrochure.co.uk/admin/ckfinder/userfiles/files/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://nedowningbrochure.co.uk/admin/ckfinder/userfiles/files/free-minecraft-skin-packs_GM479516143.pdfIn PDF document text
    • https://nedowningbrochure.co.uk/admin/ckfinder/userfiles/files/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • https://nedowningbrochure.co.uk/admin/ckfinder/userfiles/files/minecraft-free-no-virus_GM479516143.pdfIn PDF document text
    • https://nedowningbrochure.co.uk/admin/ckfinder/userfiles/files/ways-to-get-robux_GM431946152.pdfIn PDF document text
    • https://nedowningbrochure.co.uk/admin/ckfinder/userfiles/files/coin-master-extra-spins_GM406889139.pdfIn PDF document text
    • https://nedowningbrochure.co.uk/admin/ckfinder/userfiles/files/free-coins-and-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://nedowningbrochure.co.uk/admin/ckfinder/userfiles/files/money-hack-in-roblox-retail-tycoon_GM431946152.pdfIn PDF document text
    • https://nedowningbrochure.co.uk/admin/ckfinder/userfiles/files/5-games-on-roblox-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://nedowningbrochure.co.uk/admin/ckfinder/userfiles/files/moon-static-coin-master-generator-hacks-free_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
font_00_sfnt_off00003135.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3135 22528 bytes
SHA-256: ce356975c6edbe4e91f26a3916a1e7d64cc16b95efe10489539828287bc8fb42
font_01_sfnt_off0000636e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x636E 18744 bytes
SHA-256: 30a2c575023908b4f2873a2c506cf1dd7d4cce6c2b03b20b5a33b18f82d0ec48

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