Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd2f51eb2e7da95d…

MALICIOUS

PDF

35.6 KB Created: 2021-05-12 01:02:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: a33fe1b9ec88e38b123b49a538a55477 SHA-1: a03d5604e9ccab461a7419c2f143566bfedda82e SHA-256: bd2f51eb2e7da95d1083686d4af402899e24360cec144e47179c29b95c660fc9
70 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded text and metadata indicating it is a lure for a "Coin Master 3.3 Hack Version Download". A critical heuristic identified a link to known malicious redirector infrastructure, specifically pointing to the URL https://netcdn.xyz/app/406889139/coin-master-3.3-hack-version-download-game-hack. This URL is likely used to deliver a second-stage payload or facilitate further malicious activity.

Machine Learning

  • Nyx PDF Classifier clean score 0.0265

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/406889139/coin-master-3.3-hack-version-download-game-hack In 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_003_off00003195.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3195 24964 bytes
SHA-256: 86d488299e4f4e814d65f0b731fd22208b914cc1fe4f3312d1e42b04010da352
font_01_sfnt_off00006886.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6886 18668 bytes
SHA-256: c9c08938a486310b32848fcf2d5752b2e836f5cdfc047cd8e0e772ef14e34309

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