Malicious PDF — malware analysis report

Static analysis result for SHA-256 dbfb4f19b53a8b9d…

MALICIOUS

PDF

38.2 KB Created: 2021-05-20 20:50:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 363ade71afba236be8faeaaca0a77d93 SHA-1: ed61c5d753d07b928290beb7e750925309e31364 SHA-256: dbfb4f19b53a8b9d9321374c6fb16df0e57a29f09db3f58c84bb3a8794296fe6
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that point to known malicious redirector infrastructure, specifically targeting a Minecraft APK download. The presence of a visual download button further supports the lure. The ML classifier also flagged this PDF with high confidence, indicating malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9407

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 https://netcdn.xyz/app/479516143/minecraft-apk-free-download-0.16-0-game-hack In PDF document text
    • https://www.arquetopia.org/images/coin-master-claim-spins_GM406889139.pdfIn PDF document text
    • https://www.arquetopia.org/images/free-robux-websites-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • https://www.arquetopia.org/images/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://www.arquetopia.org/images/free-roblox-hack_GM431946152.pdfIn PDF document text
    • https://www.arquetopia.org/images/microsoft-roblox-rewards_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_off0000392c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x392C 25112 bytes
SHA-256: 203c6dda8d624676ef7a5640aeb37008204ef805e77b849d5208e3219c8f9c6b
font_01_sfnt_off000071b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71B1 19148 bytes
SHA-256: 143cdc4e5324f1572c7170c4fe37a033449aea51cdd3ec4d91b7fb0cb62456a0

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