Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1c8d608bddaaaf5…

MALICIOUS

PDF

44.2 KB Created: 2021-06-03 16:14:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 2c97c69d5d66fc69ca4e547721d25e9c SHA-1: 67d796efcefc1ff14e77603148597bceb7314424 SHA-256: e1c8d608bddaaaf52fd9f21c9661a8bb10d6f3abda804a04cd4492bf347eee79
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains multiple links, including one pointing to 'netcdn.online', which is flagged as a malicious redirector. The document body and heuristics indicate a lure for game hacks or free generators, designed to trick users into clicking the malicious link. This likely leads to a second-stage download or exploit, hence the inclusion of T1203.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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/how-do-you-hack-roblox-game-hack In PDF document text
    • https://www.andrology.co.uk/uploads/files/files/how-to-get-free-mods-in-minecraft_GM479516143.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/www-free-robux_GM431946152.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/free-robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/how-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/free-coin-master-cards_GM406889139.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/coin-master-links-for-free-spins_GM406889139.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/coin-master-rewards-app_GM406889139.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/link-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/minecraft-clipart-free_GM479516143.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/roblox-rape-hack_GM431946152.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/coin-master-free-spins-link-today-facebook_GM406889139.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/free-robux-offers_GM431946152.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/free-minecraft-bedrock-server_GM479516143.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/coin-master-coins-free_GM406889139.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/coin-master-hack-ios-cydia_GM406889139.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/free-robux-for-free_GM431946152.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/free-coins-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/blogspot-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/play-full-version-of-minecraft-for-free-no-download_GM479516143.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/coin-master-new-cards-hack_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_off00004e63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4E63 25904 bytes
SHA-256: 83749da03ba36112a32088d820aaaf17bfd20f0b330249df7e5c16ba61ec59ea
font_01_sfnt_off0000882a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x882A 18816 bytes
SHA-256: d27b94fe1a8c05d6feb56d9a091a96145976f0feb7173cb46f16c8470fe3a7d8