Malicious PDF — malware analysis report

Static analysis result for SHA-256 53856b58cbd9f8db…

MALICIOUS

PDF

372.5 KB Created: 2015-08-21 09:13:52 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: bc30f7f7c41f780f5c8171c65bdafd5f SHA-1: 848c8811e28ccf948af447fa700363f170fa2d31 SHA-256: 53856b58cbd9f8db2a1e9d638c33419fc75150888f40a4cff7edfe836221f408
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 an attempt to lead the user to a harmful site. The document body, though heavily obfuscated, contains text that appears to be a lure for downloading a game. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9946

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=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B8%D0%B3%D1%80%D1%83+%D0%BC%D0%B5%D1%82%D1%80%D0%BE+2034+%D1%87%D0%B5%D1%80%D0%B5%D0%B7+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE+%D0%BD%D0%B0+%D1%80%D1%83%D1%81%D1%81%D0%BA%D0%BE%D0%BC&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654676_chek_order_sberbanka_shrift.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654675_dnevniki_vampira_10_kniga_ohotniki_obretaya_sudbu_skachat.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00058b8e.bin
90795b7f198359c21d238d48f2fa7e18e7013773560465a362c28686f666861f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58B8E 9368 bytes
font_01_sfnt_off0005a707.bin
e05d77cd22d84065249b2d3be0aa4e095ff9b7db45ee6fe89a49f8158b5e094e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A707 13508 bytes

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