Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9ef7c0f5cc69e94…

MALICIOUS

PDF

354.9 KB Created: 2015-08-26 10:25:30 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 2bf95dd945a5bfd0ccbf6e543c7200d1 SHA-1: 26091ccc1cb524990fb4244221f4d6f29a28dd69 SHA-256: a9ef7c0f5cc69e940ffb9303458004796aeb3258edffd895a8ce37abe7977800
92 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and contains a critical heuristic indicating a malicious redirector link. The embedded URL, http://botcraftman.ru/, is likely used to direct users to a malicious site. No scripts were extracted from this sample, but the presence of the malicious URL is sufficient evidence of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B8%D0%BD%D0%B4%D0%B8%D0%B9%D1%81%D0%BA%D0%B8%D0%B5+%D0%BF%D0%B5%D1%81%D0%BD%D0%B8+%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//4751/4751739_moduy__dlya__fermer_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4752/4752119_skachat__programmu__dlya_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4751/4751570_pushkin__zimnyaya__doroga_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00054904.bin
f19131e4043b8a9f8ad1aedba4194a32eb3019770c1c80861f53ee7fd51f0aee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54904 8232 bytes
font_01_sfnt_off00056040.bin
d50af70a67b040a3ab0f2878c4c4810188794f804bb9cb50e6b48be6bc939acf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56040 13660 bytes

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