Malicious PDF — malware analysis report

Static analysis result for SHA-256 694d3617d38321d5…

MALICIOUS

PDF

367.9 KB Created: 2015-08-22 09:03:40 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: af4f2d414509b69d2854014eef515316 SHA-1: 8757c7ca756f7c4480dd53d87489185c5189504a SHA-256: 694d3617d38321d59698cdb4bd9ea2fb5d6d2ed5de5cb0b76d2e548dbd2fc6cb
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is a PDF that contains a link to a known malicious redirector URL. The ML classifier and ClamAV also flagged this file as malicious, indicating it is likely a dropper or downloader. The embedded URL is the primary indicator of malicious intent, suggesting the document's purpose is to lure the user to a compromised site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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-9090552-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-9090552-0
  • 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%B1%D0%B0%D0%B7%D0%B0+%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85+%D0%BE+%D1%81%D1%83%D0%B4%D0%B8%D0%BC%D0%BE%D1%81%D1%82%D0%B8+%D1%87%D0%B5%D0%BB%D0%BE%D0%B2%D0%B5%D0%BA%D0%B0+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4674/4674519_mazin_vozhd_vikingov_skachat_fb2.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4674/4674570_skachat_filmuy_v_formate_amv_na_pleer.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4674/4674478_dzhon_grin_bumazhnuye_goroda_skachat.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005785b.bin
a95dc3bdec294820d56f5d4ee210672a9e44ab832fbee91bcc64c518e7d4efe5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5785B 8220 bytes
font_01_sfnt_off0005906c.bin
fe6977a35e4919cfc4696e17b126ba8ce95a1eb88907e16abea0a9d9961a3425		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5906C 14984 bytes

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