Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d40b40f51a3ff36…

MALICIOUS

PDF

339.6 KB Created: 2015-08-26 09:59:41 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 98d87948cdf73bc55ca7dfaf05523584 SHA-1: 4c55810446b3afdbaf87d3f3d77dc92120acba71 SHA-256: 6d40b40f51a3ff362ed5a313b496959d6358477cc95eeaea16a75817f3e9fbac
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, botcraftman.ru, which is a strong indicator of malicious intent. The ML classifier also flagged this PDF with high confidence. While no scripts were extracted, the presence of the malicious URL suggests the document is designed to lure the user to a harmful site, likely for phishing or malware delivery.

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%BD%D0%BE%D1%87%D0%BD%D1%8B%D0%B5+%D1%81%D0%BD%D0%B0%D0%B9%D0%BF%D0%B5%D1%80%D1%8B+%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//4751/4751675_deming__vuyhod__iz_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4752/4752135_vaha__dyepo__depo_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4751/4751736_otzuyv__o__detskom_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005045a.bin
b7b6d24c4c55355a725c30a01b3b5b049db3754cc0b67ef692c45cc7f2cf7f1c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5045A 9504 bytes
font_01_sfnt_off00051e02.bin
75cc754589ec08f6e16f0e1db2d3d4ef632227af46029cf3981a6fd13fe51ff7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x51E02 16024 bytes

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