Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb95cf89c5864b1e…

MALICIOUS

PDF

43.3 KB Created: 2021-05-16 07:48:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 0d2630c8f3118d35158d80ee045a353a SHA-1: deb909998d72c56cbad45e2f5deab8efc469dcee SHA-256: cb95cf89c5864b1e18796e4f5fc1f164608c7827381f9397ebcd15fb0458a73d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link disguised as a 'free generator / game hack' lure, which is a common tactic for phishing or malware distribution. The link redirects to known malicious infrastructure, indicating a high likelihood of malicious intent. No scripts were extracted, but the PDF structure and embedded link strongly suggest a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/free-robux-live-game-hack In PDF document text
    • https://www.heathcote.staffs.sch.uk/admin/ckfinder/userfiles/files/coin-master-coins_GM406889139.pdfIn PDF document text
    • https://www.heathcote.staffs.sch.uk/admin/ckfinder/userfiles/files/100-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://www.heathcote.staffs.sch.uk/admin/ckfinder/userfiles/files/coin-master-game-hacks_GM406889139.pdfIn PDF document text
    • https://www.heathcote.staffs.sch.uk/admin/ckfinder/userfiles/files/coin-master-free-spins-apple_GM406889139.pdfIn PDF document text
    • https://www.heathcote.staffs.sch.uk/admin/ckfinder/userfiles/files/how-to-hack-someones-roblox-account-2021_GM431946152.pdfIn PDF document text
    • https://www.heathcote.staffs.sch.uk/admin/ckfinder/userfiles/files/coin-master-village-cost_GM406889139.pdfIn PDF document text
    • https://www.heathcote.staffs.sch.uk/admin/ckfinder/userfiles/files/how-to-get-free-robux-without-surveys_GM431946152.pdfIn PDF document text
    • https://www.heathcote.staffs.sch.uk/admin/ckfinder/userfiles/files/free-spin-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • https://www.heathcote.staffs.sch.uk/admin/ckfinder/userfiles/files/pro-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.heathcote.staffs.sch.uk/admin/ckfinder/userfiles/files/roblox-gift-card-for-free_GM431946152.pdfIn PDF document text
    • https://www.heathcote.staffs.sch.uk/admin/ckfinder/userfiles/files/free-robux-com_GM431946152.pdfIn PDF document text
    • https://www.heathcote.staffs.sch.uk/admin/ckfinder/userfiles/files/coin-master-free-spins-and-free-coins_GM406889139.pdfIn PDF document text
    • https://www.heathcote.staffs.sch.uk/admin/ckfinder/userfiles/files/coin-master-spin-free_GM406889139.pdfIn PDF document text
    • https://www.heathcote.staffs.sch.uk/admin/ckfinder/userfiles/files/how-to-change-your-name-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://www.heathcote.staffs.sch.uk/admin/ckfinder/userfiles/files/coin-master-link-daily-get-free-spins-amp_GM406889139.pdfIn PDF document text
    • https://www.heathcote.staffs.sch.uk/admin/ckfinder/userfiles/files/appsmob-info-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.heathcote.staffs.sch.uk/admin/ckfinder/userfiles/files/free-robux-2021-no-verification_GM431946152.pdfIn PDF document text
    • https://www.heathcote.staffs.sch.uk/admin/ckfinder/userfiles/files/rbx-free_GM431946152.pdfIn PDF document text
    • https://www.heathcote.staffs.sch.uk/admin/ckfinder/userfiles/files/free-links-to-coin-master_GM406889139.pdfIn PDF document text
    • https://www.heathcote.staffs.sch.uk/admin/ckfinder/userfiles/files/free-spin-coin-master-new-link_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_off00004afd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4AFD 26224 bytes
SHA-256: 4053100f6a849494c64ed893554a446e20690fbf69ae7cb9275eb82ed4401c92
font_01_sfnt_off0000871d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x871D 18248 bytes
SHA-256: 2e5a72f8344bcf9b425e9fd022f0a9c5c2029812f1a4b00ba9f2a8ee504eb572

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