Malicious PDF — malware analysis report

Static analysis result for SHA-256 5cd3a680091cf642…

MALICIOUS

PDF

391.2 KB Created: 2015-08-19 14:20:32 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 9a9952ebe7377e0f234f132df1e00788 SHA-1: 1ed2d9afcf2056e386ff4ad0253c260872792a2f SHA-256: 5cd3a680091cf64260a413aa9511699057339ddf275549a49a2422204643473d
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF was flagged by multiple heuristics as malicious, including a critical finding for linking to known malicious redirector infrastructure. The primary malicious URL identified is http://botcraftman.ru/, which is likely used to serve a second-stage payload or redirect to a phishing site. The file's nature as a PDF dropper suggests it's intended to exploit vulnerabilities or trick users into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

Heuristics 3

  • 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.
  • ClamAV: Pdf.Dropper.Agent-7526612-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7526612-0
  • 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%B4%D0%B5%D0%BD+%D0%B1%D1%80%D0%B0%D1%83%D0%BD+%D0%B8%D0%BD%D1%84%D0%B5%D1%80%D0%BD%D0%BE+%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+%D0%BD%D0%B0+%D1%80%D1%83%D1%81%D1%81%D0%BA%D0%BE%D0%BC+txt&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4626/4626804_flight_simulator_2015_skachat_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4626/4626649_odnolineynuye_shemuy_yelektrosnabzheniya_v_visio.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4496/4496748_karta_belarusi_2015_dlya_navitel_android_skachat_besplatno.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005c9ec.bin
ca1008dd4285f6764aa8a0f8eb0fced67a665fe2248f602e3e84e8b1827bfd11		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C9EC 9948 bytes
font_01_sfnt_off0005e611.bin
cbdb434a8fc05de60c2e12bbf1a29a856ceb5d28f59896d4fc5b9452ec99b551		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E611 18120 bytes

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