Malicious PDF — malware analysis report

Static analysis result for SHA-256 afa0bdb4d06c3265…

MALICIOUS

PDF

346.2 KB Created: 2015-08-22 09:01:20 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: c81db5d72ed4855247bae571648a803c SHA-1: 01fa8a45caafc9a0c13cb8fc1e0d053713db55b4 SHA-256: afa0bdb4d06c32658473f2865403dc6303f8bf06fcdc662c9bd41d07173d2503
90 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, botcraftman.ru. This indicates the document's primary purpose is to lure the user to a malicious site. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, and the document body was heavily obfuscated and truncated, preventing further analysis of the specific lure.

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%D0%BD%D1%82%D0%B5%D0%BD%D1%82+css+%D0%B4%D0%BB%D1%8F+garrys+mod&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4674/4674549_trudovoy_kodeks_rk_2015_skachat_besplatno.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4674/4674596_russko_bashkirskiy_perevodchik_tekstov_onlayn.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4674/4674531_igo_primo_2015_dlya_windows_ce_60_skachat.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00051cb7.bin
0877ab729a107a86668509b443082b19017d623e4385522a05ecdaf3e6b53e08		 pdf-font-stream PDF embedded font (sfnt) at offset 0x51CB7 9252 bytes
font_01_sfnt_off000536ba.bin
fae8d5a868b183e9f876c8cc207b281235c7d638fbd69e2d2bc59d3bf30473a9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x536BA 17108 bytes

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