Malicious PDF — malware analysis report

Static analysis result for SHA-256 16a8d9ebdffc03d7…

MALICIOUS

PDF

36.0 KB Created: 2021-05-25 10:36:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 94b40ea6738647be7255d5e28eac643e SHA-1: 5471343ee9888d4d9ad11cd1c0da3f3e5a4987f7 SHA-256: 16a8d9ebdffc03d767dfde762f4aa6197e0b3022c9a3aa145b25b2eaf9b34ac2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically promoting 'free mods for Minecraft' and 'free Robux'. The document body includes a call to action to 'CLICK HERE TO ACCESS MINECRAFT GENERATOR', further reinforcing the lure. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9492

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/479516143/free-mods-for-minecraft-pe-game-hack In PDF document text
    • https://www.ghknights.org/images/minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • http://ghknights.org/images/free-minecraft-client_GM479516143.pdfIn PDF document text
    • http://ghknights.org/images/easy-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.ghknights.org/images/free-robux-no-download_GM431946152.pdfIn PDF document text
    • https://www.ghknights.org/images/get-free-roblox_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
font_00_sfnt_off000032a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32A1 25396 bytes
SHA-256: 4748bd6b2303b9aa37796357cc5a663e74730330c910bb4c0c91d4817de310df
font_01_sfnt_off00006c4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C4B 18040 bytes
SHA-256: 55677d50e7f19372d6dfb723d72c398dee248f925afb4425ab44c3bb4ecd28f4

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