Malicious PDF — malware analysis report

Static analysis result for SHA-256 82b683c12e306071…

MALICIOUS

PDF

362.7 KB Created: 2015-08-20 11:33:02 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: c70e88984e8d3cd19e4e292d20cd7ecf SHA-1: 6d802f5fbe4333e413704ba8cfd565dd17b57019 SHA-256: 82b683c12e306071aded8c036759c4208628d748580267241aec2f924c2d64c3
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a heuristic firing for a malicious redirector link pointing to botcraftman.ru. The ML classifier also strongly flagged this PDF as malicious. While no scripts were extracted, the presence of a malicious URL indicates an attempt to lure the user to a compromised site, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

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%BA%D0%BE%D0%B4%D1%8B+%D0%BD%D0%B0+%D0%B0%D0%B2%D0%B0%D1%82%D0%B0%D1%80%D0%B8%D1%8E+%D0%BD%D0%B0+%D0%B7%D0%BE%D0%BB%D0%BE%D1%82%D0%BE+%D0%B2+%D0%BE%D0%B4%D0%BD%D0%BE%D0%BA%D0%BB%D0%B0%D1%81%D1%81%D0%BD%D0%B8%D0%BA%D0%B0%D1%85&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4638/4638834_primeruy_po_matematike_5_klass_raspechatat.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4639/4639515_reshebnik_vuysshaya_matematika_dlya_yekonomistov_kremera.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4641/4641733_skachat_maynkraft_pe_0951_na_android.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000567bf.bin
ae5003acbee31ae6e9e1382e7750c8e7f0823227d4e75dd835cfcc502d5bf50d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x567BF 8284 bytes
font_01_sfnt_off00057fb6.bin
78e5aa938dc8ded53e60dbc6475465dc263789b721dae9cc2a351e73eaa21920		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57FB6 13652 bytes

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