Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6ad1339ba9916a6…

MALICIOUS

PDF

374.7 KB Created: 2015-08-26 09:44:55 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6) First seen: 2021-10-26
MD5: 752d2159f0113a71dccc6347e6e578d7 SHA-1: 63370ffb5336aba5d480fd6f8f5b26be70c93bff SHA-256: d6ad1339ba9916a6b821e2ba1065905d4a4135de15f7ed31164a300e930750a3
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains an embedded link identified as a malicious redirector. The ML classifier also flagged this PDF with high confidence. While no scripts were extracted, the presence of a malicious URL strongly suggests an attempt to lure the user to a compromised site, likely for further exploitation or credential harvesting. The document's metadata indicates it was generated by wkhtmltopdf, a tool sometimes abused to create malicious PDFs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

Heuristics 2

  • 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.
  • 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 http://botcraftman.ru/?lip&keyword=%D1%82%D0%B5%D1%81%D1%82+%D0%BF%D0%BE+%D0%B0%D0%BD%D0%B3%D0%BB%D0%B8%D0%B9%D1%81%D0%BA%D0%BE%D0%BC%D1%83+%D1%8F%D0%B7%D1%8B%D0%BA%D1%83+8+%D0%BA%D0%BB%D0%B0%D1%81%D1%81&charset=utf-8 In PDF document text
    • http://img1.liveinternet.ru/images/attach/c/7//4751/4751862_morskaya__rakushka__iz_.pdfIn PDF document text
    • http://img1.liveinternet.ru/images/attach/c/7//4751/4751553_bryuggskoe__kruzhevo__kryuchkom_.pdfIn PDF document text
    • http://img1.liveinternet.ru/images/attach/c/7//4751/4751622_orudiya__smerti__knigi_.pdfIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005957c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5957C 9080 bytes
SHA-256: 284db25cc77997a773a94b3df294cffafd1b6047a4cb9757adf4c896a1a134ee
font_01_sfnt_off0005af6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AF6B 13596 bytes
SHA-256: d45d31bae38c0f77fdf5232de33c52c0c22a4b24ff5ca8c09682a0c9935e699a

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