Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f6b9eeecad9af74…

MALICIOUS

PDF

357.7 KB Created: 2015-08-29 11:22:21 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6) First seen: 2021-07-07
MD5: 3dbda75dd4e0e3e48c3a278e0e8e8ad0 SHA-1: 00d51bd8b696af04cd3d529829f90f33e09f74be SHA-256: 1f6b9eeecad9af74c58b198cd0869f79e13f754b169419f15b103c3076211023
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains an embedded link to a known malicious redirector, botcraftman.ru, which is highly indicative of malicious intent. The ML classifier also flagged this PDF with high confidence. The document body is heavily obfuscated and unreadable, but the presence of the malicious URL is sufficient to determine the attack pattern. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+windows+7+%D0%B4%D0%BE%D0%BC%D0%B0%D1%88%D0%BD%D1%8F%D1%8F+%D1%80%D0%B0%D1%81%D1%88%D0%B8%D1%80%D0%B5%D0%BD%D0%BD%D0%B0%D1%8F+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8 In PDF document text
    • http://img0.liveinternet.ru/images/attach/c/7//4830/4830167_kladr__dlya__1s_.pdfIn PDF document text
    • http://img0.liveinternet.ru/images/attach/c/7//4830/4830180_yesterday__notuy__dlya_.pdfIn PDF document text
    • http://img0.liveinternet.ru/images/attach/c/7//4830/4830005_igruy__na__piispi_.pdfIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00054dfd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x54DFD 9512 bytes
SHA-256: a9f9bb572f2a83da56fd67bfb4137a7ec4d5fff3f9b841e4fd7e119178f45bf0
font_01_sfnt_off000568b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x568B0 15212 bytes
SHA-256: 6d4d0bc6ab5d1c4955968da084d41a12b63619940ac188a7434d7f60b98132aa

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