Malicious PDF — malware analysis report

Static analysis result for SHA-256 d885c46c4a607285…

MALICIOUS

PDF

186.7 KB Created: 2015-08-08 09:39:10 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: aba73712df066ffd85055ec84ac4b077 SHA-1: 50beb18e449eb9b0f257b5408028baa2f79541d9 SHA-256: d885c46c4a607285f514b82aa4c0b56e0f8ac2dd491f73bce60a62dc8e1bd96f
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, indicating a phishing or malware distribution attempt. The ML classifier also flagged this PDF with high confidence. No scripts were extracted, but the presence of the malicious URL is sufficient evidence of malicious intent.

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%B0%D0%B4%D0%BC%D0%B8%D0%BD%D0%B8%D1%81%D1%82%D1%80%D0%B0%D1%82%D0%BE%D1%80+%D0%B3%D0%BE%D1%81%D1%82%D0%B8%D0%BD%D0%B8%D1%86%D1%8B+%D0%B4%D0%BE%D0%BB%D0%B6%D0%BD%D0%BE%D1%81%D1%82%D0%BD%D0%B0%D1%8F+%D0%B8%D0%BD%D1%81%D1%82%D1%80%D1%83%D0%BA%D1%86%D0%B8%D1%8F&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383839_arkon_skachat.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383777_skachat_komiksuy_na_yelektronnuyu_knigu.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383700_zanimatelnuye_zadachi_po_algebre_dlya_5_7_klassov_s_resheniyami.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000247e3.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x247E3 3556 bytes
font_01_sfnt_off00025566.bin
ecd0c09e55cc0e659ea65b9bdb11a96796b62f6b5c79a53de0ad9890bf290841		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25566 14476 bytes
font_02_sfnt_off000282dd.bin
b79d56b22a3d37edc4793e81e28af2d51416733c1decb699be69ae0b1e9dff38		 pdf-font-stream PDF embedded font (sfnt) at offset 0x282DD 14468 bytes
font_03_sfnt_off0002ad8c.bin
4a230d73eacf080b784c74809e9012301cca0d5b49a387a34e3e3d02745155a8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AD8C 6740 bytes
font_04_sfnt_off0002c0e6.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C0E6 6084 bytes
font_05_sfnt_off0002d07b.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D07B 3752 bytes

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