Malicious PDF — malware analysis report

Static analysis result for SHA-256 af26ba5f06cc7336…

MALICIOUS

PDF

33.8 KB Created: 2021-07-22 18:50:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-22
MD5: 4992fd4fc0d7c3e0493bf5b6146c3ce5 SHA-1: ef9d99a7210162516b5e66a48f1a40cb4b5a6f5e SHA-256: af26ba5f06cc73365338250d5bad1bf1f37673e0c53a825eedea5caded18063e
160 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9946

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.tw/app/479516143/minecraft-download-free-download-game-hack In PDF document text
    • http://library.fisip.upnvj.ac.id/repository/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/how-to-get-free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/minecraft-dungeons-free_GM479516143.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/i-got-hacked-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/free-modded-minecraft-server_GM479516143.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/free-minecraft-bedrock-server-hosting_GM479516143.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/free-minecraft-hosting_GM479516143.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/coin-master-free-coins-link_GM406889139.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/free-minecraft-survival-server_GM479516143.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_off00002e76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E76 23104 bytes
SHA-256: 6fd0a36a28af3698a7b44c34595d130917b66eaadbe4e7edc5eeead5cf2eedbf
font_01_sfnt_off0000624b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x624B 18292 bytes
SHA-256: bcf6477408162be3b167f843e68a68979a000ee483b53557047313ee62fe1046

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