Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb8f9d3bad2e338e…

MALICIOUS

PDF

36.7 KB Created: 2021-05-25 08:30:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 6b673c176ee1755bc07d041ca9683b31 SHA-1: 595417e56c000d3e1279df37ff446159af586943 SHA-256: eb8f9d3bad2e338e0d4b6c78deab13c126bc32522d8e91c06648eadc223b265c
82 Risk Score

Malware Insights

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

The document presents itself as a Minecraft download, but contains a fake CAPTCHA lure to trick the user into clicking a malicious link. The embedded URL and multiple other URLs point to potentially malicious content, reinforcing the deceptive nature of the document. No scripts were extracted, but the presence of a fake CAPTCHA and external links strongly suggests a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

Heuristics 4

  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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-java-edition-download-free-game-hack PDF link annotation
    • https://dmp.diniyyahputeri.sch.id/__statics/gudangsoal/files/free-robux-codes-generator-no-verification_GM431946152.pdfIn PDF document text
    • https://dmp.diniyyahputeri.sch.id/__statics/gudangsoal/files/coin-master-free-soins_GM406889139.pdfIn PDF document text
    • https://dmp.diniyyahputeri.sch.id/__statics/gudangsoal/files/roblox-free-robux_GM431946152.pdfIn PDF document text
    • https://dmp.diniyyahputeri.sch.id/__statics/gudangsoal/files/free-spin-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://dmp.diniyyahputeri.sch.id/__statics/gudangsoal/files/coin-master-sound-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • https://youtuIn 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_off00003559.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3559 24440 bytes
SHA-256: 78539f1db0dababd7343d76c6126d204db01dd2a0951b9cfcc6deafc4b563fd1
font_01_sfnt_off00006d71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D71 18572 bytes
SHA-256: b44bcce2d8515c0d099a66814c088ed689798a3dbc3c1364cf14b7c888151b67

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