Malicious PDF — malware analysis report

Static analysis result for SHA-256 88296c37ec42ab61…

MALICIOUS

PDF

377.7 KB Created: 2015-08-29 11:33:51 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6) First seen: 2021-11-23
MD5: 3d89f00f01f42a887a3b77645197a0f2 SHA-1: dc8c7404d38ee8b01cbb4ebb54a6f70a26bd9d63 SHA-256: 88296c37ec42ab61d5767d02769b50103087328de047ba45864c0a8e06af21bb
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains an embedded link identified as a malicious redirector. The ML classifier also flagged this PDF with high confidence. The presence of an embedded URL suggests an attempt to lure the user to a malicious site, likely for further exploitation or credential harvesting. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9972

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%B6%D1%83%D1%80%D0%BD%D0%B0%D0%BB+%D1%83%D1%80%D0%B0%D0%BB%D1%8C%D1%81%D0%BA%D0%B8%D0%B9+%D1%81%D0%BB%D0%B5%D0%B4%D0%BE%D0%BF%D1%8B%D1%82+%D1%87%D0%B8%D1%82%D0%B0%D1%82%D1%8C+%D0%BE%D0%BD%D0%BB%D0%B0%D0%B9%D0%BD&charset=utf-8 In PDF document text
    • http://img0.liveinternet.ru/images/attach/c/7//4830/4830470_skachat__besplatno__igru_.pdfIn PDF document text
    • http://img0.liveinternet.ru/images/attach/c/7//4830/4830062_dark__souls__2_.pdfIn PDF document text
    • http://img0.liveinternet.ru/images/attach/c/7//4830/4830174_reshebnik__po__obzh_.pdfIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005a036.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A036 8140 bytes
SHA-256: e6da9007d651e74c4be8fd85920c1dfc02feaf8510fdbc1fb24ec61606d11de1
font_01_sfnt_off0005b774.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B774 15328 bytes
SHA-256: b70d8da9d1c531b2b343bfe3f504d110cfb1e5cf1209aaa9218d1b5b246c82e6

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