Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf35f43678b73a93…

MALICIOUS

PDF

33.5 KB Created: 2021-07-19 04:07:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d41924bab83a429197f1bd21619e68e6 SHA-1: 87173290f7ac28c924befd953067f1b52fbd16c8 SHA-256: cf35f43678b73a938e1ec95d391cb30b97d3acb9545c83b245d50079f85b9885
100 Risk Score

Malware Insights

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

The PDF contains embedded links and a visual download button, attempting to trick the user into downloading a malicious application disguised as a game hack. The primary link, http://netcdn.tw/app/479516143/minecraft-apk-download-v1-14.4-2-free-game-hack, is flagged as a malicious redirector. The document body also contains multiple other URLs pointing to similar lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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
    • http://www.sitiamministrabili.it/images/robux-free-2021_GM431946152.pdfIn PDF document text
    • http://www.sitiamministrabili.it/images/give-me-free-robux_GM431946152.pdfIn PDF document text
    • http://www.sitiamministrabili.it/images/free-robux-no-verification-2021-ios_GM431946152.pdfIn PDF document text
    • http://www.sitiamministrabili.it/images/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.sitiamministrabili.it/images/free-minecraft-maps_GM479516143.pdfIn PDF document text
    • http://www.sitiamministrabili.it/images/free-robux-websites-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://www.sitiamministrabili.it/images/funbloxxyz-free-robux_GM431946152.pdfIn PDF document text
    • http://www.sitiamministrabili.it/images/get-minecraft-windows-10-free_GM479516143.pdfIn PDF document text
    • http://www.sitiamministrabili.it/images/minecraft-on-computer-free_GM479516143.pdfIn PDF document text
    • http://www.sitiamministrabili.it/images/roblox-hack-tool_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
stream_002_off00002c8e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2C8E 22592 bytes
SHA-256: d595f7851ddc0bbefe6538ef930e30ba14ebcb629e50db5f2ce8ea2ae6f0de6d
font_01_sfnt_off00005e8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E8A 19128 bytes
SHA-256: 93ea6bd85251d95bb8fdb3e1515e0b836a385cc2448c0aeb3adc981293f46b66

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