Malicious PDF — malware analysis report

Static analysis result for SHA-256 3cace8d7c307ab52…

MALICIOUS

PDF

38.9 KB Created: 2021-05-13 07:41:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d25c4ec5da7fc4ba8b629cec140e7c66 SHA-1: d7ba9305a19932eac318ef35f2397158a1197de2 SHA-256: 3cace8d7c307ab5212ba3fa9f8a6c148137967fff1caed5ef3760fccd1751342
70 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a link that redirects to a known malicious URL, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body also contains text and a call-to-action phrase ('CLICK HERE TO ACCESS COIN MASTER GENERATOR') suggesting a lure for downloading a game mod. While no scripts were explicitly extracted, the presence of a malicious redirector and the nature of the lure strongly indicate an attempt to deliver a malicious payload, likely through a user-initiated download.

Machine Learning

  • Nyx PDF Classifier clean score 0.0127

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-mod-version-free-download-v3.4.4-game-hack In PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000032ec.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32EC 24524 bytes
SHA-256: fc6dfcd72db3ccd457b5bc5665842766a20c0f2af4eb4fcd29ee98b398563ace
font_01_sfnt_off00006a2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A2B 18728 bytes
SHA-256: ad22a82d8b3233edb38f402cd3e5013c6375fd48aabf823ea78d744f504abdc7
font_02_sfnt_off00008da9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DA9 3264 bytes
SHA-256: e32c06502c11b52acb5e814091c5fdbffd1e2a904ac7a9cfb8b5b180bd139088

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