Malicious PDF — malware analysis report

Static analysis result for SHA-256 8432420826daf9dc…

MALICIOUS

PDF

47.0 KB Created: 2021-06-03 16:28:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f06f99ef7a19bd20d2e6ed97c4cde337 SHA-1: 6337c78a2a7f43562e78998d40c8a97710d666b6 SHA-256: 8432420826daf9dc59e6168cd738b54cb8fb8817d34abb08d73e3a3af5460b08
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 malicious redirectors. The document body and embedded URLs strongly suggest a lure for users interested in such cheats, likely leading to phishing or malware download sites. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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.online/app/431946152/free-robux-websites-2021-game-hack In PDF document text
    • https://www.andrology.co.uk/uploads/files/files/minecraft-diamond-finder-hack_GM479516143.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/toolbox-premium-apk_GM479516143.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/tryrbx-site-free-robux_GM431946152.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/coin-master-offline-hack_GM406889139.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/coin-master-free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/daily-free-spins-coin-master-heaven_GM406889139.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/roblox-free-robux_GM431946152.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/coin-master-apk-mod-hack-download_GM406889139.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/coin-master-free-spins-daily-fb-champion_GM406889139.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/i-want-free-robux_GM431946152.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/coin-master-free-spins-link-may-2021_GM406889139.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/hack-coin-master-spin-apk_GM406889139.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/minecraft-windows-10-edition-hacked-client_GM479516143.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/free-robux-generator-no-survey_GM431946152.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/coin-master-hack-version-download-2021_GM406889139.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/robux-com-free-robux_GM431946152.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/free-roblox-followers-generator_GM431946152.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/free-tiktok-likes-2021_GM835599320.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/roblox-free-robux-generator_GM431946152.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_004_off00005252.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5252 28492 bytes
SHA-256: 0340fe58cdced37af8e6c32879f1d3280171f40c117cc2ba2e031edb06e1699d
font_01_sfnt_off00009355.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9355 18836 bytes
SHA-256: ef44fc6ccc8558fc54da3394cf76e38d99de94399ef86c3bb36f5b939f331685