Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c2842fed21c71e5…

MALICIOUS

PDF

351.6 KB Created: 2015-08-28 11:52:05 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 31a92e9897841805746db8f66823cf91 SHA-1: 9048912dfd3098f9ddf67d915a1715f9f1a07e41 SHA-256: 7c2842fed21c71e5609dbacf5ab2ee801f08c47300dd0ea60ada075b0cf27d79
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The ML classifier also flagged the PDF with high confidence. The embedded URL points to botcraftman.ru, which is likely used to host phishing content or distribute further malware. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9949

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%80%D0%B8%D0%BD%D0%B0%D1%82+%D0%B2%D0%B0%D0%BB%D0%B8%D1%83%D0%BB%D0%BB%D0%B8%D0%BD+%D0%B2+%D0%BA%D0%B0%D0%B6%D0%B4%D0%BE%D0%BC+%D0%BC%D0%BE%D0%BB%D1%87%D0%B0%D0%BD%D0%B8%D0%B8+%D1%81%D0%B2%D0%BE%D1%8F+%D0%B8%D1%81%D1%82%D0%B5%D1%80%D0%B8%D0%BA%D0%B0+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+fb2&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802391_raspisanie__avtobusov__sarapul_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802405_skachat__oki__dlya_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802653_skachat__warcraft__3_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00053a39.bin
a6f6a3a91d0b26ccf3ee8416bbb34a922ad75fcd68e08a0a411ae91461b64cd5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53A39 8524 bytes
font_01_sfnt_off0005536a.bin
3c13c61e27dfef96ee3741d245bea99b1dce415546aa0615febeff004e20bed9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5536A 13704 bytes

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