Malicious PDF — malware analysis report

Static analysis result for SHA-256 746918594ab1a52e…

MALICIOUS

PDF

357.8 KB Created: 2015-08-21 09:25:26 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: f6451f5ae7e8ce41cd907e411498d835 SHA-1: 6d2289ff9830be45bc87f8aa05ae6973a0f66bd2 SHA-256: 746918594ab1a52e7ff9d0a7fe210487ac4a57424f3ca89575a40013d0da9b39
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing indicating a malicious redirector link to botcraftman.ru. The ML classifier also strongly flagged this PDF as malicious. While no scripts were extracted, the embedded URL is the primary indicator of malicious intent, likely serving as a lure for further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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%B8%D0%B3%D1%80%D1%8B+%D1%87%D0%B5%D1%80%D0%B5%D0%B7+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82+%D0%BC%D0%B5%D0%B4%D0%B0%D0%BB%D1%8C+%D0%B7%D0%B0+%D0%BE%D1%82%D0%B2%D0%B0%D0%B3%D1%83+2015+warfighter&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654825_skachat_maynkraft_na_android_236.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654692_nastolnuye_igruy_dlya_vzrosluyh_skachat_i_raspechatat.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654844_mayn_kampf_skachat_besplatno_txt.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00054adc.bin
3289fbd0aebf5e4dd3f1ad08bfa02f61cfe73096c7ce34e11cad9101d3521b9a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54ADC 9820 bytes
font_01_sfnt_off000566f7.bin
ffb066bfcb0a6af0f67a75434f94f206658b00c8108fb43be4c8a58c4979d286		 pdf-font-stream PDF embedded font (sfnt) at offset 0x566F7 15632 bytes

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