Malicious PDF — malware analysis report

Static analysis result for SHA-256 685408982edbfe85…

MALICIOUS

PDF

354.0 KB Created: 2015-08-24 00:17:28 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 628a861264e430ef6db442adced43048 SHA-1: 23761cd80fe751304036a9c44eb43b6d5191ccde SHA-256: 685408982edbfe855cb47999a3bd681d25431ecc9f1b3d61d3ef94994739fae5
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing indicating a malicious redirector link. The embedded URL, http://botcraftman.ru/..., is known to lead to malicious infrastructure. While no scripts were extracted, the presence of a malicious link strongly suggests an attempt to lure the user to a compromised site, likely for further exploitation or credential harvesting.

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=%D1%84%D0%BE%D0%BA%D1%81%D0%B8%D1%82+%D1%84%D0%B0%D0%BD%D1%82%D0%BE%D0%BC+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE+%D0%BD%D0%B0+%D1%80%D1%83%D1%81%D1%81%D0%BA%D0%BE%D0%BC&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/6//4693/4693397_solidworks__2013__skachat_.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4693/4693580_skachat__programmu__dlya_.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4693/4693592_driverpack__solution__14_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00053eed.bin
16b550fc6fab39820f07f9d1796f6ece0b90ba1ab09d0e97257e4c73dddcea2d
pdf-font-stream PDF embedded font (sfnt) at offset 0x53EED 8336 bytes
font_01_sfnt_off000556d7.bin
e7c26f487540d728e4e05823bfa9c3b76c8247dd7fbfa1f783e01504cc98f3f5
pdf-font-stream PDF embedded font (sfnt) at offset 0x556D7 16388 bytes