Malicious PDF — malware analysis report

Static analysis result for SHA-256 573ea7e828d363b0…

MALICIOUS

PDF

381.3 KB Created: 2015-08-29 01:37:55 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 0ee69023f18dc3790f8ba39b8e317919 SHA-1: a6244896e3ca4e8c656d56370d56c74c56f6110c SHA-256: 573ea7e828d363b0fb7298a9f7b56044afa08cf105bf6811e627ea4292b5cbd4
90 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'http://botcraftman.ru/'. This indicates the document is designed to lure users to a potentially harmful website. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, and the document body was unreadable, but the presence of the malicious URL is sufficient evidence for this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9943

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%BE%D0%B1%D0%B5%D1%80%D1%82+%D0%BA%D0%B8%D0%B9%D0%BE%D1%81%D0%B0%D0%BA%D0%B8+%D0%BA%D0%B2%D0%B0%D0%B4%D1%80%D0%B0%D0%BD%D1%82+%D0%B4%D0%B5%D0%BD%D0%B5%D0%B6%D0%BD%D0%BE%D0%B3%D0%BE+%D0%BF%D0%BE%D1%82%D0%BE%D0%BA%D0%B0+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4817/4817487_skachat__filmuy__besplatno_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4818/4818350_vneshnie__pechatnuye__formuy_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4818/4818089_supermen__2___.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005ab32.bin
e608971ec5fc12f2cd146af6312bcae3d2beba2a7a588c35ac78dcfa9b96d356		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5AB32 9068 bytes
font_01_sfnt_off0005c556.bin
6a3a1f2f1145f997613743cea70674b514cc929c3380cbcd8d12d4d4264bc315		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C556 15796 bytes

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