Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9de406a291d6f5b…

MALICIOUS

PDF

184.6 KB Created: 2015-08-08 09:54:49 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: c153286dc2345c9c8e07eac4ab5974b5 SHA-1: f89ab366eb689d7e1110575370f028ae3e62f751 SHA-256: b9de406a291d6f5bfdd69b112c2142ddcce76c0d219c33e49627fa6d2f9cec6e
90 Risk Score

Malware Insights

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

The PDF document was flagged by multiple heuristics as malicious, specifically for containing a link to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The primary malicious IOC is the redirector URL, which is likely used to funnel victims to a phishing site or download further malware. 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%93%D0%B0%D0%B7%D0%B5%D1%82%D0%B0+%D0%BA+%D1%8E%D0%B1%D0%B8%D0%BB%D0%B5%D1%8E+%D1%81%D0%B2%D0%BE%D0%B8%D0%BC%D0%B8+%D1%80%D1%83%D0%BA%D0%B0%D0%BC%D0%B8&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384096_pbu_10_99_skachat.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384490_skachat_shrift_romul.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384620_rise_of_nations_thrones_and_patriots_skachat_torrent_besplatno.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023ef5.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23EF5 3556 bytes
font_01_sfnt_off00024c78.bin
898576a75a5a9ef4e891270d853f00a456f20ca552b50b34fef81078b81b714b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24C78 14844 bytes
font_02_sfnt_off00027a77.bin
2894a2e95f819f01c1e340b533698417996480c8c8e83cbe4142995621a3eef5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27A77 14468 bytes
font_03_sfnt_off0002a527.bin
d4bc7a0733d60ace5baf4f7430764e7cadab3ccfb36aaf4d404fb4bcfc09c3b3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A527 6732 bytes
font_04_sfnt_off0002b882.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B882 6084 bytes
font_05_sfnt_off0002c817.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C817 3752 bytes

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