Malicious PDF — malware analysis report

Static analysis result for SHA-256 e61165017d6076b2…

MALICIOUS

PDF

355.1 KB Created: 2015-08-28 11:31:33 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: eb6dbe7b91d58a6272c2c94eceee437d SHA-1: 3a08f3f55b6c1239273a70b68f73b8c06f531670 SHA-256: e61165017d6076b2dcb2228ab16753c6722fe3b79fdc6c65ee3cb40217eda242
92 Risk Score

Malware Insights

MITRE ATT&CK
T1200 Hardware Add-in T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file was flagged by a machine learning classifier and contains a link to a known malicious redirector infrastructure. The embedded URL, http://botcraftman.ru/, is likely used to direct users to a malicious site. No scripts were extracted, and the document body was unreadable, but the presence of the malicious link is a strong indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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%BC%D0%B0%D0%B9%D0%BD%D0%BA%D1%80%D0%B0%D1%84%D1%82+1+5+2+%D0%B8%D0%B3%D1%80%D0%B0%D1%82%D1%8C+%D0%BE%D0%BD%D0%BB%D0%B0%D0%B9%D0%BD&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802373_windows__7__torrent_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802371_shema__ultrazvukovogo_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802382_russkaya__vyaz_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000548ea.bin
9b22db2400b242b16573fd360bd234e22dfcb12e505d5458f349bf2194f69283		 pdf-font-stream PDF embedded font (sfnt) at offset 0x548EA 8132 bytes
font_01_sfnt_off0005608b.bin
ec093e779bfa86caee5e8f48b6cc08e834f2d7f1af22d37881ffaa41af8bba63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5608B 14068 bytes

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