Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc5405131d9b1751…

MALICIOUS

PDF

183.3 KB Created: 2015-08-08 10:36:42 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: ab6b28d802f4e8241128e369b5af24b4 SHA-1: 785d3e48804f42af1a4d59577e1f29783036e46b SHA-256: fc5405131d9b1751406b674a8e454cb8fc2769f6ef7bd418a643de9019348179
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, botcraftman.ru, which is designed to lure users to a malicious site. The ML classifier also flagged this PDF with high confidence. The presence of embedded URLs and the malicious redirector strongly suggest a phishing or malware delivery attempt.

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%BF%D1%80%D0%BE%D0%BF%D0%B0%D0%BB%D0%B0+%D1%81%D0%B5%D1%82%D1%8C+%D0%BD%D0%B0+iphone&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384056_skachat_univer_novaya_obschaga_4_sezon_cherez_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384813_skachat_licenzionnuyy_launcher_maynkraft_175.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4385/4385324_skachat_igruy_bez_ogranicheniy_besplatno.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023b87.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23B87 3556 bytes
font_01_sfnt_off0002490a.bin
b47812a41ebe19d6fed69f60d6c91de5b66e494f1dc77458f8438c2be061619d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2490A 14392 bytes
font_02_sfnt_off00027601.bin
1b5a9736fcf7f6ebaf0e440142df741bf20d5c27e169ae089c82966b2061d315		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27601 14564 bytes
font_03_sfnt_off0002a0d2.bin
242995cc6e4ac608f5d03d1d754e22444cd97a872c262d18350041492eb24484		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A0D2 6592 bytes
font_04_sfnt_off0002b378.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B378 6084 bytes
font_05_sfnt_off0002c30d.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C30D 3752 bytes

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