Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2e3c32f4bebd772…

MALICIOUS

PDF

291.2 KB Created: 2015-08-22 09:07:02 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: f33d4f5ad8aad66f648c20a5d939989d SHA-1: c819b61458ca2d2b09e3268aa22c57afee8a0579 SHA-256: a2e3c32f4bebd77283bf371047f196a05741b97a7c02422a584204d0316c112a
90 Risk Score

Malware Insights

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

The PDF file was flagged by a heuristic rule indicating it contains a link to known malicious redirector infrastructure. The ML classifier also assigned a high probability of maliciousness. The embedded URL http://botcraftman.ru/?lip&keyword=%D0%9F%D1%80%D0%BE%D0%B3%D1%80%D0%B0%D0%BC%D0%BC%D1%83+xiso+115&charset=utf-8 is the primary indicator of this malicious activity, likely serving as a lure to a further malicious destination.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7357

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%9F%D1%80%D0%BE%D0%B3%D1%80%D0%B0%D0%BC%D0%BC%D1%83+xiso+115&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4674/4674649_kak_mozhno_prochitat_chuzhuyu_perepisku_v_whatsapp.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4674/4674629_swedll32_dll_skachat_besplatno.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4674/4674619_skachat_dps_14_cherez_torrent.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00044607.bin
e6819034073b07d8c253707b28ac2a7f4cec63a02eaa2c28db517a5866b4fca9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x44607 8464 bytes
font_01_sfnt_off00045e60.bin
052b06c3d444a1ca8d3de351c6ff79f024c7ec0c9a9559d41455aba1ecea8a4a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x45E60 15496 bytes

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