Malicious PDF — malware analysis report

Static analysis result for SHA-256 7551632a4d35fd74…

MALICIOUS

PDF

376.8 KB Created: 2015-08-28 11:31:15 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: d635bbab7568d206f30504294443fb28 SHA-1: 4404d3ee3ca450c3226b871dc41b480bbe3ac8c0 SHA-256: 7551632a4d35fd747ef263de3ed049208387435d67caae01f4d024b013deace4
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a link to a known malicious redirector infrastructure. The ML classifier also flagged this PDF with high confidence. The embedded URL, http://botcraftman.ru/?lip&keyword=Opera+mini+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+s5230&charset=utf-8, is the primary indicator of malicious intent, likely leading to a phishing page or malware download.

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=Opera+mini+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+s5230&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802386_skachat__gta_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802361_kak__perevesti__pechat_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802377_doktor__kto__19631989_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005981f.bin
8081f89c43c4425ad163dc0184b9ccad1045b70d4656982ee6961b804f42a34a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5981F 9384 bytes
font_01_sfnt_off0005b1cd.bin
4cca2aa55e9c96626461923522f7965ff36a7ce19281c560ed2a71f15b4fc588		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B1CD 16436 bytes

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