Malicious PDF — malware analysis report

Static analysis result for SHA-256 0363ce47731948a7…

MALICIOUS

PDF

37.3 KB Created: 2021-05-22 07:12:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: bae631cc131a92994d493911df3df0d6 SHA-1: 87a76572869429743da29e8a8196a8538db0b3e8 SHA-256: 0363ce47731948a71329773bc89d520928103d92f47b251b97b567f9fb69e656
82 Risk Score

Malware Insights

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

The PDF document contains a fake CAPTCHA lure, designed to trick users into clicking a link. The embedded URLs point to resources that likely host further malicious content or exploit kits. The ML classifier also flagged this PDF as malicious with high confidence.

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/406889139/coin-master-free-spins-and-coins-daily-game-hack PDF link annotation
    • http://ddsadler.net/images/coin-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://ddsadler.net/images/coin-master-daily-spin-free_GM406889139.pdfIn PDF document text
    • http://ddsadler.net/images/coin-master-free-blogspot_GM406889139.pdfIn PDF document text
    • http://ddsadler.net/images/minecraft-diamond-finder-hack_GM479516143.pdfIn PDF document text
    • http://ddsadler.net/images/roblox-promo-codes-2021-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003728.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3728 25108 bytes
SHA-256: 09cc2a95092b6d070bf0ddc36902c154cbfe48b8f64ba5d850ca17616767bc28
font_01_sfnt_off00006fe2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FE2 18480 bytes
SHA-256: e9052e0f9c593188345ba389179451ef12c6c6a401d56a628cce0964dfd3917c

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