Malicious PDF — malware analysis report

Static analysis result for SHA-256 7dbb89dfda672a74…

MALICIOUS

PDF

353.0 KB Created: 2015-08-21 09:17:26 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 2bc34779f8a8577dadd43010584139a3 SHA-1: db1b394673459990cc42f79c0bfead347ebfabf7 SHA-256: 7dbb89dfda672a746ec58403f80b4411fbedec1daffd99265803ba929aac4df0
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, indicating an attempt to lure the user to a harmful site. The ML classifier also flagged this PDF with high confidence. No scripts were extracted, but the embedded URL is the primary indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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%80%D0%B0%D0%BC%D1%88%D1%82%D0%B0%D0%B9%D0%BD+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE+mp3+%D0%B2%D1%81%D0%B5+%D0%B0%D0%BB%D1%8C%D0%B1%D0%BE%D0%BC%D1%8B&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//4654/4654692_nastolnuye_igruy_dlya_vzrosluyh_skachat_i_raspechatat.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654682_skachat_programmu_torrent_3x_speed.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00053c2c.bin
835bbdc26e54cc6b24225edeb214ac707dab2e1996fbc6ceb60c180c28319b6d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53C2C 8664 bytes
font_01_sfnt_off00055484.bin
09ffc7ee007759212632b9d11cb967c0363695c9f44b893030a02123c014df1f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55484 15568 bytes

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