Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2561cef98f2ec51…

MALICIOUS

PDF

184.0 KB Created: 2015-08-08 10:03:54 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: df6292ac05d606a59713d45508d2c611 SHA-1: 140bade4e8cc4fea9b258c718b3d3a4cca1d6ce1 SHA-256: b2561cef98f2ec5120fc34db8c497cf9a5669322a87889a210f6c7163e00f0c7
92 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, http://botcraftman.ru/. This heuristic indicates the document is designed to lure users to a potentially harmful site. The ML classifier also flagged this PDF with high confidence. No scripts were extracted from this sample, and the document body was not sufficiently readable to infer a specific lure.

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=the+sims+3+%D0%B1%D0%B5%D0%B7+%D1%86%D0%B5%D0%BD%D0%B7%D1%83%D1%80%D1%8B&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384702_skachat_albom_picca_cherez_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384508_aktivator_windows_81_korporativnaya_build_9600.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384522_karta_ruybinska_s_ulicami_i_nomerami_domov_skachat.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a340.bin
fb7179e1a626bc8d71010f5eef4bce7d7b8ff4ebcd50ceb8c31d0abee456bd85		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A340 6608 bytes
font_00_sfnt_off00023c79.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23C79 3556 bytes
font_01_sfnt_off000249fc.bin
461c6e7b0ccf64fbc3e3008b530238a84743502ee1b0ecb1b4f37a60b9d29f9e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x249FC 14692 bytes
font_02_sfnt_off000277fc.bin
a9fa8affc99977454da2c85a4f700dc4c7d7b461efe498405b4251c1108e28b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x277FC 14732 bytes
font_04_sfnt_off0002b60c.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B60C 6084 bytes
font_05_sfnt_off0002c5a1.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C5A1 3752 bytes

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