Malicious PDF — malware analysis report

Static analysis result for SHA-256 839d7961c60d37db…

MALICIOUS

PDF

360.4 KB Created: 2015-08-29 11:57:48 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6) First seen: 2021-07-07
MD5: b78f6567a4a32756dac441b64433830c SHA-1: 44d782bd3cd08dbe7a7d25553d180242c52aac98 SHA-256: 839d7961c60d37dbdc7c27db37a5a3817e1b2d0dba2740b6e5b2057bc6548bd6
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 highly indicative of malicious intent. The ML classifier also flagged this PDF with high confidence. The embedded URL is likely used to deliver a secondary payload or to phish for user credentials.

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=%D0%BF%D1%80%D0%BE%D0%B3%D1%80%D0%B0%D0%BC%D0%BC%D0%B0+%D0%B4%D0%BB%D1%8F+%D1%81%D0%BB%D0%B5%D0%B6%D0%BA%D0%B8+%D0%B7%D0%B0+%D1%82%D0%B5%D0%BB%D0%B5%D1%84%D0%BE%D0%BD%D0%BE%D0%BC&charset=utf-8 In PDF document text
    • http://img0.liveinternet.ru/images/attach/c/7//4830/4830612_blender__248__na_.pdfIn PDF document text
    • http://img0.liveinternet.ru/images/attach/c/7//4830/4830156_raspisanie__avtobusa__32_.pdfIn PDF document text
    • http://img0.liveinternet.ru/images/attach/c/7//4830/4830561_goluye__i__smeshnuye_.pdfIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00055b2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x55B2A 8000 bytes
SHA-256: 0a8d796d62fd668455a076877500b20e2e386b769d2110d69a14ab5a6927fcb2
font_01_sfnt_off00057225.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57225 15388 bytes
SHA-256: 70d1cf3a07981a4758d3777ade336fe14c08df3357b2395bc1e4d834823c1a1b

Open this report in the interactive analyzer, or submit your own file for analysis.