Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4f4301cb1b9998b…

MALICIOUS

PDF

379.8 KB Created: 2015-08-22 09:04:12 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: ae7824bb1b0557e25960248586d002e9 SHA-1: fda4cdaba5464d12e3e32bdd6e8f65af6cfef4d1 SHA-256: e4f4301cb1b9998b14cedef680e608b222de966d9e33846000ca0ac6d38d558e
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 infrastructure at botcraftman.ru. This heuristic, combined with the ML classifier's high confidence, strongly suggests the PDF is designed to lure users to a malicious site. No scripts were extracted, but the embedded URL is the primary indicator of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9943

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%B3%D1%83%D0%B1%D0%BA%D0%B0+%D0%B1%D0%BE%D0%B1+%D0%BA%D0%B2%D0%B0%D0%B4%D1%80%D0%B0%D1%82%D0%BD%D1%8B%D0%B5+%D1%88%D1%82%D0%B0%D0%BD%D1%8B+%D0%BF%D0%BE+%D0%BC%D0%BE%D1%82%D0%B8%D0%B2%D0%B0%D0%BC+%D1%84%D0%B8%D0%BB%D1%8C%D0%BC%D0%B0&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4674/4674629_swedll32_dll_skachat_besplatno.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4674/4674486_friends_2_uchebnik_skachat_besplatno.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4674/4674613_stanok_dlya_proizvodstva_samorezov_cena.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005a2fd.bin
0d67c6b1e477f963a526c1cb8ec8d1354e73d226cf821d504d63cccdf13a25eb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A2FD 10192 bytes
font_01_sfnt_off0005bf34.bin
fc420669988ffbf0394383083467e4687650fa80c466de8f2192e8faaedc96a3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BF34 15476 bytes

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