Malicious PDF — malware analysis report

Static analysis result for SHA-256 7488a0ba43ee23ca…

MALICIOUS

PDF

359.9 KB Created: 2015-08-21 09:16:38 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: a1511c478958cc810f5c5bc88a34d3cb SHA-1: 1aded0bc5207d5d97117a3622236fcc3dc87a7f2 SHA-256: 7488a0ba43ee23ca28d722be37e33da6ef3431bfe0c265f1117ba215b7f349b1
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains an embedded link to a known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. While no scripts were directly extracted, the presence of a malicious URL suggests the document is designed to lure the user to a compromised site, likely for further exploitation or credential harvesting.

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%BD%D0%BE%D1%82%D1%8B+%D0%B4%D0%BB%D1%8F+%D0%B4%D0%B5%D1%82%D1%81%D0%BA%D0%BE%D0%B3%D0%BE+%D1%85%D0%BE%D1%80%D0%B0+%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&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654714_star_stable_online_na_russkom_skachat.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654683_gippenreyter_skachat_samaya_vazhnaya_kniga_dlya_roditeley.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654684_kogda_budut_izvestnuy_rezultatuy_egye_po_himii_2015.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00055588.bin
b6e1176a74d890ebf89973f88b62711555098ae1dd313a51bb33d5bc8d10058c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55588 8608 bytes
font_01_sfnt_off00056ea1.bin
b6e1cdd885ed221c768ce2e53bc69b525727bcc04ca827ef25f0b3dbff79ad91		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56EA1 15988 bytes

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