Malicious PDF — malware analysis report

Static analysis result for SHA-256 c4db1a88005ecdc1…

MALICIOUS

PDF

37.1 KB Created: 2021-05-22 04:44:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 7212e40c18734f19b9819b7a0b30184b SHA-1: 614064afcc39a56bfbe23a1d8aaa5993a2c681d2 SHA-256: c4db1a88005ecdc16bb4d22720439b464d0c4e801f87c337293bb16d347e9d1a
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains embedded links to known malicious infrastructure, specifically a URL associated with game hacks. The document body includes text and a call-to-action button, suggesting a social engineering lure to trick the user into downloading a payload. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

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-hacks-1.15-2-game-hack In PDF document text
    • http://no-no-gos.de/images/microsoft-free-robux_GM431946152.pdfIn PDF document text
    • http://no-no-gos.de/images/coin-master-spins-free-2021_GM406889139.pdfIn PDF document text
    • http://no-no-gos.de/images/daily-free-spin-coin-master-link_GM406889139.pdfIn PDF document text
    • http://no-no-gos.de/images/my-roblox-account-was-hacked_GM431946152.pdfIn PDF document text
    • http://no-no-gos.de/images/free-tiktok-likes-no-human-verification-or-download_GM835599320.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_off000036e4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x36E4 25336 bytes
SHA-256: 151417da73dc3112419d2ac8318ed40d393d2b46b3b91b318c50438e179a7110
font_01_sfnt_off0000704f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x704F 18168 bytes
SHA-256: 304447a64c9c9da34caed164523f062cdaeb71933cc5e9c334f07884a33f2f76

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