Malicious PDF — malware analysis report

Static analysis result for SHA-256 4eeeaf761c43473f…

MALICIOUS

PDF

353.5 KB Created: 2015-08-19 14:23:41 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: cf3c7a4d86c6af3565402c52b4d5ed8d SHA-1: b0f1855e5b98b848be37cf1f571818c70ab5e9bc SHA-256: 4eeeaf761c43473fb679000f326023b49b2547f46f71a96499f075fa09de1b3d
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a link to 'botcraftman.ru' which is flagged as a malicious redirector. The document body, though heavily obfuscated, suggests a lure related to downloading Microsoft Visio 2007, indicating a phishing or social engineering attempt. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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=microsoft+visio+2007+%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+%D1%80%D1%83%D1%81%D1%81%D0%BA%D0%B0%D1%8F+%D0%B2%D0%B5%D1%80%D1%81%D0%B8%D1%8F+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4626/4626703_psihologicheskie_testuy_dlya_postupleniya_v_policiyu.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4626/4626655_koduy_kosgu_v_2015_godu_dlya_byudzhetnuyh_uchrezhdeniy.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4626/4626509_rezultatuy_gia_po_matematike_2015_9_klass_volgogradskaya_oblast.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00053ccb.bin
78c1b6abac1aba82d598e36594d9e4701b8583d53cc6b9a9d2bd8fd9faf1c7a4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53CCB 9456 bytes
font_01_sfnt_off000557e2.bin
459c4d4a2f64ce7cb841be140477af60464fdfd32e05336cd9594f1a80282368		 pdf-font-stream PDF embedded font (sfnt) at offset 0x557E2 14716 bytes

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