Malicious PDF — malware analysis report

Static analysis result for SHA-256 74856d6331d19f0f…

MALICIOUS

PDF

356.1 KB Created: 2015-08-25 22:13:17 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: d83681466027654079e5d311643501f8 SHA-1: d8e8487dda506f505a6ea6d35ff64475cfb3558e SHA-256: 74856d6331d19f0fb999055fde9c015b50298c47e7035bb9ca74569bc9c2548e
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a heuristic alert for a malicious redirector link pointing to 'http://botcraftman.ru/'. This URL is likely used to lure users to a malicious site for phishing or malware download. The ML classifier also flagged the document with high confidence. No scripts were extracted, but the presence of a malicious URL is a strong indicator of malicious intent.

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=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+word+%D0%B4%D0%BB%D1%8F+nokia+5530&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4740/4740608_klyuch__k__igre_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4740/4740685_skachat__besplatno__torrent_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4740/4740637_uplay_overlay_show_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00054779.bin
7b6479e52ab00b774bbf65e72a4afb5711d3a5345b4757823ea2f7d0a3687903		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54779 8820 bytes
font_01_sfnt_off000560e1.bin
b7af060fd7544c998eb687683fa38cc214ad183fc2278af96f3f5ddccfaaa8de		 pdf-font-stream PDF embedded font (sfnt) at offset 0x560E1 15616 bytes

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