Malicious PDF — malware analysis report

Static analysis result for SHA-256 23e77a6db1ca9526…

MALICIOUS

PDF

355.2 KB Created: 2015-08-20 08:39:33 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 0ac457bdd072e5875105d8e7782dad3d SHA-1: f7678d7feb775cde70fe8e0221fe2c3ceab8bf05 SHA-256: 23e77a6db1ca9526fb3235dbd957137f5627f708b2879fe356c41e37a74e256e
90 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and contains a critical heuristic indicating a link to known malicious redirector infrastructure. The embedded URL, http://botcraftman.ru/..., is the primary indicator of malicious intent. While no scripts were extracted, the presence of this malicious link suggests the document is designed to lure users to a harmful website.

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=%D0%A2%D0%B0%D0%B9%D0%BD%D0%BE%D0%BF%D0%B8%D1%81%D1%8C+%D0%BD%D0%B0+%D1%80%D1%83%D1%81%D1%81%D0%BA%D0%B8%D1%85+%D0%B8%D0%BA%D0%BE%D0%BD%D0%B0%D1%85+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%87%D1%83%D0%B4%D0%B8%D0%BD%D0%BE%D0%B2&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/6//4639/4639984_skachat_simulyator_kozla_2_cherez_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4640/4640048_pnsh_3_klass_pourochnuye_razrabotki_russkiy_yazuyk.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4639/4639065_gadanie_na_kofe_onlayn_besplatno_na_buduschee.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000547cf.bin
467ef04a65a8c4ed891402e7265182a85d42dab2bca8a26347bc6e0c3dbfbc0e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x547CF 8232 bytes
font_01_sfnt_off00055f09.bin
9ed906fcaa07d1e22c4b98204e52def86343bffc435be3e9d3c51d93e0f89e18		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55F09 14568 bytes

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