Malicious PDF — malware analysis report

Static analysis result for SHA-256 eecb56cc21cff5b0…

MALICIOUS

PDF

35.0 KB Created: 2021-07-22 00:00:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e73ad59360e8f4c19dab9669f4de7a33 SHA-1: 2f3f78601f22690c9184880c79622b38bdd724c2 SHA-256: eecb56cc21cff5b0a07c44a53fbe032687b8f447b6652bdd551797d69a8df6f1
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File

The PDF contains embedded links and a visual download button, directing users to download potentially unwanted software. The ML classifier and redirector link heuristic strongly indicate malicious intent. The primary malicious URL identified is http://netcdn.tw/app/479516143/minecraft-apk-download-v1-14.4-2-free-game-hack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9962

Heuristics 3

  • 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-apk-download-v1-14.4-2-free-game-hack In PDF document text
    • https://javexglobal.com/image/data/files/free-robux-today_GM431946152.pdfIn PDF document text
    • https://javexglobal.com/image/data/files/minecraft-noob-vs-pro-vs-hacker-vs-god_GM479516143.pdfIn PDF document text
    • https://javexglobal.com/image/data/files/free-minecraft-texture-packs_GM479516143.pdfIn PDF document text
    • https://javexglobal.com/image/data/files/minecraft-apk-free-download-016-0_GM479516143.pdfIn PDF document text
    • https://javexglobal.com/image/data/files/free-coin-master-spins-blog_GM406889139.pdfIn PDF document text
    • https://javexglobal.com/image/data/files/minecraft-story-mode-free_GM479516143.pdfIn PDF document text
    • https://javexglobal.com/image/data/files/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://javexglobal.com/image/data/files/robux-com-free_GM431946152.pdfIn PDF document text
    • https://javexglobal.com/image/data/files/free-robux-2021_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_off00003159.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3159 22904 bytes
SHA-256: 3d10b03bdd4b0d24c00fc0d2f9f76951912688a6e1e45e710f57dde230d2ec5d
font_01_sfnt_off00006486.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6486 19128 bytes
SHA-256: 93ea6bd85251d95bb8fdb3e1515e0b836a385cc2448c0aeb3adc981293f46b66

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