Malicious PDF — malware analysis report

Static analysis result for SHA-256 a403d21dafd099d5…

MALICIOUS

PDF

368.5 KB Created: 2015-08-21 09:17:40 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 0780ff4c0be0420ded558360d21b56a5 SHA-1: c1da0933d4325ca405c506272ce3cf09885399f4 SHA-256: a403d21dafd099d53cae77241ba9fbadbe99563b77b1eb1d22dcffd0d581d2ec
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also assigned a high probability of maliciousness. The embedded URL points to 'botcraftman.ru', which is identified as a malicious redirector. This suggests the document's primary purpose is to lure the user to a harmful website.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9940

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%BA%D0%BE%D1%80%D0%BE%D0%BB%D0%B5%D0%B2%D0%B0+%D0%B1%D0%B0%D0%BB%D0%B0+%D1%81%D0%BC%D0%BE%D1%82%D1%80%D0%B5%D1%82%D1%8C+%D0%BE%D0%BD%D0%BB%D0%B0%D0%B9%D0%BD+%D0%BD%D0%B0+%D1%80%D1%83%D1%81%D1%81%D0%BA%D0%BE%D0%BC+%D1%8F%D0%B7%D1%8B%D0%BA%D0%B5+%D0%BD%D0%B0+%D1%8E&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654723_skachat_the_survivor_rusty_forest_na_android.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654689_skachat_igru_metro_2034_cherez_torrent_besplatno_na_russkom.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00057613.bin
5bd459d0b28d83df604d34739888fa673d44d0d780a42237e0ceb2c80b6dd66c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57613 8384 bytes
font_01_sfnt_off00058e1c.bin
30f2b278ddcf28e6cb8ce864729496f312d3ee82181ddc6cb7b07e9ca7e10fda		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58E1C 16984 bytes

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