Malicious PDF — malware analysis report

Static analysis result for SHA-256 cef05014ebafa690…

MALICIOUS

PDF

362.0 KB Created: 2015-08-19 16:49:04 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: aa4510b3236af3c7599374b91348af86 SHA-1: 69d32bf10186aba71b435d340f0ae1942ad0a765 SHA-256: cef05014ebafa69093eee85243f6f2c57f39fd2740300abbe4779abb4176a374
90 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector infrastructure at botcraftman.ru. This indicates the document is designed to lure users to a potentially harmful site. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the embedded URL is a high-confidence 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=%D0%A0%D0%BE%D1%81%D1%82%D0%B5%D0%BB%D0%B5%D0%BA%D0%BE%D0%BC+%D0%BC%D0%BE%D1%81%D0%BA%D0%BE%D0%B2%D1%81%D0%BA%D0%B0%D1%8F+%D0%BE%D0%B1%D0%BB%D0%B0%D1%81%D1%82%D1%8C+%D0%BB%D0%B8%D1%87%D0%BD%D1%8B%D0%B9+%D0%BA%D0%B0%D0%B1%D0%B8%D0%BD%D0%B5%D1%82&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/6//4627/4627624_skachat_besplatno_programmu_karaoke_s_ballami.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4628/4628399_tabel_ucheta_rabochego_vremeni_blank_skachat.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4626/4626891_skachat_3gp_korotkie_porno_roliki.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005631f.bin
f076fbb7cc4c070e7b1c68f541b17894e88bd870a6d86d01fedb4ab7edde94cd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5631F 7700 bytes
font_01_sfnt_off00057910.bin
b30a32e1617b77a2b5f1a7bca0aff456edc63b06232e74962e7bc47c7293c37a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57910 15100 bytes

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