Malicious PDF — malware analysis report

Static analysis result for SHA-256 672d7c41a1cded4e…

MALICIOUS

PDF

36.8 KB Created: 2021-05-13 21:39:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 0b2d1d1f8474191aff1bcca5a5e9ad2b SHA-1: 44cfbfb7b8a5cd75d0995b6c2fd8f15f4438cf76 SHA-256: 672d7c41a1cded4e2f8d6b7d06d0b1030d546c6f965bb44ad0580a80765ee7c6
70 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a link disguised as a "Roblox Generator" which redirects to a known malicious URL. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms this, indicating the document is designed to lead users to harmful infrastructure. While no scripts were explicitly extracted, the document structure and embedded content suggest an attempt to exploit user interest in online games for malicious redirection.

Machine Learning

  • Nyx PDF Classifier clean score 0.0334

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/431946152/blox.pink-free-robux-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_off00003470.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3470 24920 bytes
SHA-256: cb0a1ae2315f548842f1d82b4768a4eb5b65c0593536a1ee65b36a6bbaddca88
font_01_sfnt_off00006dd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DD1 18620 bytes
SHA-256: 20ad8a2126bb9f489cd4862944fdd8c1c01869fd803457c3ce1390bedb89f69f

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