Malicious PDF — malware analysis report

Static analysis result for SHA-256 028738ab6373f4b8…

MALICIOUS

PDF

367.3 KB Created: 2015-08-28 00:15:35 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 81bbcb0476acd56821b6fd2a69e5a2f2 SHA-1: 3348d898f66edb0de14efb2abea6bf763ef8b476 SHA-256: 028738ab6373f4b88b54ca07dcdc09bfb5b9fa00d1d5b1d8b30e1fdb3e7d95fb
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a link to a known malicious redirector, indicating an attempt to lure the user to a harmful site. The ML classifier also flagged this PDF with high confidence. Although no scripts were extracted, the embedded URL is the primary indicator of malicious intent, likely serving as a lure for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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=1%D1%81+%D1%80%D0%B5%D0%BF%D0%B5%D1%82%D0%B8%D1%82%D0%BE%D1%80+%D1%80%D1%83%D1%81%D1%81%D0%BA%D0%B8%D0%B9+%D1%8F%D0%B7%D1%8B%D0%BA+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4788/4788350_yekzamenacionnuye__biletuy__i_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4788/4788362_skachat__masha__i_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4788/4788118_ct_hack__skachat__na_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005796b.bin
d980983fe840a523d534649758e8786e1648858909771631a30a115bb2d3e8d0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5796B 8168 bytes
font_01_sfnt_off000590c6.bin
b99cd669752f980ef35383e0f17af15011e121491ddacadcc9dfa46128a7ecf4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x590C6 14684 bytes

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