Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd273c8ef87dc47f…

MALICIOUS

PDF

183.5 KB Created: 2015-07-23 23:33:48 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 11fadcc9db436055e3788da983ba48f4 SHA-1: ed78e093ae4a5cef61ce5fe143cb4e4fd2a813ee SHA-256: dd273c8ef87dc47f1821780c8b025303b744447b7c51d5a4af55ff7cd356cdda
90 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector infrastructure, botcraftman.ru. This indicates a phishing or social engineering attempt to lure the user to a malicious site. The ML classifier also flagged this PDF with high confidence. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

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%9E%D1%82%D0%B2%D0%B5%D1%82%D1%8B+%D0%B4%D0%B5%D0%BB%D1%8C%D1%82%D0%B0+%D0%B3%D0%BC%D1%81%D1%81%D0%B1&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185025_baraboshkina_solfedzhio_1_klass.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4183/4183250_primer_deklaracii_3ndfl_pri_prodazhe_mashinuy.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185555_programma_dlya_zapisi_gitaruy_na_kompyuter.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023c1c.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23C1C 3556 bytes
font_01_sfnt_off0002499f.bin
b0cdb5c62b721dc36d7d5b649653eb470647eb3854019f13b6cce48ad2690c53		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2499F 14412 bytes
font_02_sfnt_off00027720.bin
dde8cb3db78f49492d397de1013a074ab9c596bc0508faa33f94bd64189db0ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27720 14468 bytes
font_03_sfnt_off0002a1d3.bin
40a746ecac9fd49c4c59bb92a39bf421b9706df9a5b08545137122fee00c8995		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A1D3 6456 bytes
font_04_sfnt_off0002b421.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B421 6084 bytes
font_05_sfnt_off0002c3b6.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C3B6 3752 bytes

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