Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d9d5a65ee24064e…

MALICIOUS

PDF

358.3 KB Created: 2015-08-26 20:01:36 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: d51f0d420c31803af9cece859b9ed548 SHA-1: 0a59815e495f6932fb5c59a62448acb5f75c8fb5 SHA-256: 6d9d5a65ee24064e5330c08dae523e3287964d122f53833088999c22c5d75973
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, http://botcraftman.ru/, which is a strong indicator of malicious intent. The ML classifier also flagged this PDF with high confidence. No scripts were extracted, but the presence of the malicious URL suggests the document is designed to lure the user to a compromised site.

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=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%BA%D0%BE%D1%80%D0%B5%D0%BB+%D0%B4%D1%80%D0%B0%D0%B2+%D1%856+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE+%D1%87%D0%B5%D1%80%D0%B5%D0%B7+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4763/4763158_kak__obnovit__binarnuyy_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4763/4763433_skachat__albom__kavabanga_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4762/4762703_avtobiografiya_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00055800.bin
ed7ea70e1093050202533c27ab05c7cd43fb7db25d71121cf2ebe31c6d6c3666		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55800 7732 bytes
font_01_sfnt_off00056e7a.bin
dd803bd6f6016bd977b08d62b54294cd68e049d14b36404adb29dda3e0208e9f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56E7A 13356 bytes

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