Malicious PDF — malware analysis report

Static analysis result for SHA-256 d975bd98464021f1…

MALICIOUS

PDF

395.1 KB Created: 2015-08-29 06:38:47 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 67810a35ab85dd8f096c877540d17107 SHA-1: 75d5081a8c921466e1eaafb54e5d9903094542e6 SHA-256: d975bd98464021f1e9a2106866d707574f38ab743644950d749f6c4642d5af54
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, indicating an attempt to lure the user to a harmful site. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the embedded URL is sufficient evidence of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9945

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%B7%D0%B0%D1%8F%D0%B2%D0%BB%D0%B5%D0%BD%D0%B8%D0%B5+%D0%BD%D0%B0+%D0%B2%D1%8B%D0%B4%D0%B0%D1%87%D1%83+%D1%81%D0%B0%D0%BD%D0%B8%D1%82%D0%B0%D1%80%D0%BD%D0%BE-%D1%8D%D0%BF%D0%B8%D0%B4%D0%B5%D0%BC%D0%B8%D0%BE%D0%BB%D0%BE%D0%B3%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%BE%D0%B3%D0%BE+%D0%B7%D0%B0%D0%BA%D0%BB%D1%8E%D1%87%D0%B5%D0%BD%D0%B8%D1%8F&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4824/4824464_skachat__uchebnik__po_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4823/4823583_matematika__11__klass_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4822/4822997_deviz__otryada_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005e9f7.bin
a0fd3184187b5020416ccf919cf6eb73a75d62aeaed91ad84487f15dc3545ba6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E9F7 8684 bytes
font_01_sfnt_off00060373.bin
3fddc3076f922123e053376d50a781f582eabdce9d92b6b445b288f5ad57b57e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60373 12812 bytes

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