Malicious PDF — malware analysis report

Static analysis result for SHA-256 65221a1a4d9ce8b4…

MALICIOUS

PDF

29.9 KB Created: 2021-07-20 05:22:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 904519445072e5eb77d780664d5e5fbc SHA-1: 94d9275b46468977df006c3c2d2d735d77da7577 SHA-256: 65221a1a4d9ce8b46afe323958660133ba4480f8ddd62394cc0fdf94de3af529
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links pointing to known malicious redirector infrastructure, specifically advertising a 'free generator / game hack'. The document body also contains a call-to-action phrase, reinforcing the lure. The primary purpose appears to be directing users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier clean score 0.0794

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/can-you-play-minecraft-for-free-game-hack In PDF document text
    • https://vicentinacentroautomotivo.com.br/ckeditor/ckfinder/userfiles/files/free-minecraft-server-maker_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_off00002129.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2129 22392 bytes
SHA-256: e860facdb0396d4d0a336b48daa4bb7c7348720715f7937219ea03bded0f6a04
font_01_sfnt_off000052ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x52EF 18420 bytes
SHA-256: 81bede04d90c080fa29d20db124f1531358f39ee91ce610139dedd08dc3401fc

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