Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a11989988547cb7…

MALICIOUS

PDF

375.8 KB Created: 2015-08-28 11:32:05 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: f0cd9dcb6462656c12b035bc1e7d3b89 SHA-1: 05f040ddbdcc8a82476308d6ef7d631f76838f9b SHA-256: 9a11989988547cb7c6a67adb908998369ac792dce57d308ae65b645b1455800c
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, botcraftman.ru. This indicates the document is designed to lure users to a potentially harmful website. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the embedded URL is sufficient evidence of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9946

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+%D0%BA%D0%BB%D0%B8%D0%B5%D0%BD%D1%82+minecraft+152+%D1%81+%D0%BC%D0%BE%D0%B4%D0%B0%D0%BC%D0%B8+%D0%BE%D1%82+%D0%BB%D0%B0%D0%B7%D1%83%D1%80%D0%B8%D1%82%D0%BD%D0%BE%D0%B3%D0%BE+%D0%B3%D0%BD%D0%BE%D0%BC%D0%B0+%D0%B6%D0%B0%D1%80%D0%B0&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802388_programma__dlya__redaktirovaniya_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802380_skachat__minecraft__0_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802361_kak__perevesti__pechat_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00058e2e.bin
e7e141c8f3d5825024c5a2076ac0f09555e2acf8c72a5836ee4d8a00ba6f9718		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58E2E 10536 bytes
font_01_sfnt_off0005abd9.bin
fea29df8e1294d151ed7f873c64e83d038ce578e898176ac2c8df831cf2c04cb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5ABD9 16836 bytes

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