Malicious PDF — malware analysis report

Static analysis result for SHA-256 668342402d45af39…

MALICIOUS

PDF

350.4 KB Created: 2015-08-29 12:52:57 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6) First seen: 2021-07-07
MD5: ba76c62f48c9bbb4787a24f8a6cbb61c SHA-1: edf361c54b034580ae0162bf8ad87a1498439b42 SHA-256: 668342402d45af39944aaae4690c6e072f4346cfea25c7358246ad30cc623119
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, http://botcraftman.ru/, which is a strong indicator of malicious intent. The ML classifier also flagged this PDF with high confidence. While no scripts were extracted, the presence of the malicious URL suggests the document's purpose is to lure the user to a compromised site for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

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=%D0%B3%D1%82%D0%B0+%D0%B2%D0%B0%D0%B9%D1%81+%D1%81%D0%B8%D1%82%D0%B8+%D0%BD%D0%B0+%D0%B0%D0%BD%D0%B4%D1%80%D0%BE%D0%B8%D0%B4&charset=utf-8 In PDF document text
    • http://img1.liveinternet.ru/images/attach/c/7//4829/4829823_testirovanie__cpd__na_.pdfIn PDF document text
    • http://img0.liveinternet.ru/images/attach/c/7//4832/4832055_vuyboruy2008__geopoliticheskiy__simulyator_.pdfIn PDF document text
    • http://img0.liveinternet.ru/images/attach/c/7//4830/4830960_pes__2015__demo_.pdfIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00053851.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53851 7444 bytes
SHA-256: 1cdc46c5e0ef7755765fc2e4e8979249462dd561397fbba43c571c202c687ad9
font_01_sfnt_off00054dc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x54DC7 13956 bytes
SHA-256: ed9e059501999e7b68ba1901aaa9d78b811ff53cab76ca65cb095572c4fbf05e

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