Malicious PDF — malware analysis report

Static analysis result for SHA-256 c64536ccf88c6a2e…

MALICIOUS

PDF

33.0 KB Created: 2021-07-20 01:10:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 318fcd7759b216337c5dca4006319173 SHA-1: 599c1fa112b4bb2be64b14afd6d8517e043922d7 SHA-256: c64536ccf88c6a2e5d2fcfd9465c1c0dfeaf2cfb5f5079b840a426174c570dfe
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links and a visual download button, directing users to a known malicious redirector. The document body and embedded links suggest a lure for free game-related downloads, such as Minecraft or TikTok, which is a common tactic for distributing malware. The ML classifier also flagged this PDF with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9900

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-free-download-0.16-0-game-hack In PDF document text
    • https://newdirectionsforautism.org/images/how-to-get-free-tiktok-fans-without-human-verification_GM835599320.pdfIn PDF document text
    • https://newdirectionsforautism.org/images/minecraft-marketplace-free_GM479516143.pdfIn PDF document text
    • https://newdirectionsforautism.org/images/free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://newdirectionsforautism.org/images/free-minecraft-skin-maker_GM479516143.pdfIn PDF document text
    • https://newdirectionsforautism.org/images/coin-master-hack-without-verification-2021_GM406889139.pdfIn PDF document text
    • https://newdirectionsforautism.org/images/tiktok-for-free_GM835599320.pdfIn PDF document text
    • https://newdirectionsforautism.org/images/create-minecraft-server-free_GM479516143.pdfIn PDF document text
    • https://newdirectionsforautism.org/images/free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • https://newdirectionsforautism.org/images/free-spins-coins-coin-master_GM406889139.pdfIn PDF document text
    • https://newdirectionsforautism.org/images/free-minecraft-alt-generator_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_off00002a21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A21 22620 bytes
SHA-256: 1f336321ef2b3623f503a922a2af1b7348b19a31f2ef4df471ca2a02c28ee010
font_01_sfnt_off00005c88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C88 19148 bytes
SHA-256: 143cdc4e5324f1572c7170c4fe37a033449aea51cdd3ec4d91b7fb0cb62456a0

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