Malicious PDF — malware analysis report

Static analysis result for SHA-256 44187dd7e63d8f0c…

MALICIOUS

PDF

369.6 KB Created: 2015-08-22 09:31:14 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: c1f3101ef8a13575352d8225377d6af0 SHA-1: 4e7228a493ba3ec0e7aec970da6391db104eafb1 SHA-256: 44187dd7e63d8f0cbbf8afadabd8ffadccccecd4740644aaf468b7d0a8c1baed
90 Risk Score

Malware Insights

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

The PDF file was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The embedded URL points to 'botcraftman.ru', which is identified as a malicious redirector. This suggests the document's primary purpose is to lure the user to a harmful external resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9950

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%9E%D1%82%D1%87%D0%B5%D1%82+%D0%BF%D0%BE+%D0%BF%D1%80%D0%BE%D0%B8%D0%B7%D0%B2%D0%BE%D0%B4%D1%81%D1%82%D0%B2%D0%B5%D0%BD%D0%BD%D0%BE%D0%B9+%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D0%BA%D0%B5+%D0%B2+%D1%80%D0%BE%D1%81%D0%BF%D0%BE%D1%82%D1%80%D0%B5%D0%B1%D0%BD%D0%B0%D0%B4%D0%B7%D0%BE%D1%80&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4674/4674546_yuriy_antonov_diskografiya_skachat_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4674/4674863_skachat_my_talking_tom_na_kompyuter_cherez_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4674/4674560_klyuchi_dlya_aktivacii_vindovs_7.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00057adb.bin
5d071707d409ed6d84b6ccfd282e0d8d0adf6d4275bf1ad9fbfd251a4ea7329e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57ADB 8920 bytes
font_01_sfnt_off00059367.bin
67a648678c15b57cb293308d4d1082c9106a9bc2ea0d572e502efc30156aab80		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59367 16744 bytes

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