Malicious PDF — malware analysis report

Static analysis result for SHA-256 c019f1ea3392f67a…

MALICIOUS

PDF

355.5 KB Created: 2015-08-27 10:13:46 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: eb2832a75625e39e904c14cd00112275 SHA-1: b7e46aba321e09455665da7603623f62bd3eb26b SHA-256: c019f1ea3392f67a2eb890a597f3877f294702ffb0df0e77b904e151ba84e6d1
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF document was flagged by a machine learning classifier and contains a critical heuristic indicating a link to known malicious redirector infrastructure. The embedded URL, http://botcraftman.ru/..., is the primary indicator of malicious intent. No scripts were extracted, and the document body was heavily obfuscated, preventing further analysis of its specific lure.

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=%D0%BA%D0%BE%D0%BC%D0%BC%D0%B5%D1%80%D1%87%D0%B5%D1%81%D0%BA%D0%BE%D0%B5+%D0%BF%D1%80%D0%B5%D0%B4%D0%BB%D0%BE%D0%B6%D0%B5%D0%BD%D0%B8%D0%B5+%D0%BF%D0%BE+%D1%81%D1%82%D1%80%D0%BE%D0%B8%D1%82%D0%B5%D0%BB%D1%8C%D1%81%D1%82%D0%B2%D1%83+%D0%BE%D0%B1%D1%80%D0%B0%D0%B7%D0%B5%D1%86&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4771/4771907_igruy__ot__lesson_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4771/4771801_angel__ili__demon_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4772/4772230_peresopnickoe__evangelie_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00053ea7.bin
56928a51cc4ab7c91c1de38673623093daa9b3737326423ecff084c97c88575c
pdf-font-stream PDF embedded font (sfnt) at offset 0x53EA7 10116 bytes
font_01_sfnt_off00055c2f.bin
ddd9b8e1d614e82e0ad462db2674362ec9406a336855003c6d5ef8ce9953ebca
pdf-font-stream PDF embedded font (sfnt) at offset 0x55C2F 16880 bytes