Malicious PDF — malware analysis report

Static analysis result for SHA-256 6bfb313b499d6590…

MALICIOUS

PDF

377.7 KB Created: 2015-08-29 11:01:42 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6) First seen: 2021-08-25
MD5: dde1279c5fd37f08c72025afbd64b8b0 SHA-1: d5f4ed6ff41270cc4d04221763f705d8ab40ad0e SHA-256: 6bfb313b499d65905e223b16ee438962064c79f9163e4fed8ed172cf9541646e
132 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains a link to a known malicious redirector, botcraftman.ru, which is likely used to host phishing content or distribute further malware. The heuristic firings indicate the PDF is designed to lure users via an SEO redirector, suggesting a phishing or scam attempt. No scripts were extracted, but the presence of malicious links is sufficient evidence for a high confidence assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9972

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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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%B7%D0%B0%D1%8F%D0%B2%D0%BB%D0%B5%D0%BD%D0%B8%D0%B5+%D0%BD%D0%B0+%D0%B0%D1%82%D1%82%D0%B5%D1%81%D1%82%D0%B0%D1%86%D0%B8%D1%8E+%D1%83%D1%87%D0%B8%D1%82%D0%B5%D0%BB%D1%8F+%D1%84%D0%B8%D0%B7%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%BE%D0%B9+%D0%BA%D1%83%D0%BB%D1%8C%D1%82%D1%83%D1%80%D1%8B&charset=utf-8 In PDF document text
    • http://botcraftman.ru/?lip&keyword=%D0%B7%D0%B0%D1%8F%D0%B2%D0%BB%D0%B5%D0%BD%D0%B8%D0%B5+%D0%BD%D0%B0+%D0%B0%D1%82%D1%82%D0%B5%D1%81%D1%82%D0%B0%D1%86%D0%B8%D1%8E+%D1%83%D1%87%D0%B8%D1%82%D0%B5%D0%BB%D1%8F+%D1%84%D0%B8%D0%B7%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%BE%D0%B9+%D0%BA%D1%83%D0%BB%D1%8C%D1%82%DIn PDF document text
    • http://img1.liveinternet.ru/images/attach/c/7//4829/4829894_poka__ya__zhiva_.pdfIn PDF document text
    • http://img1.liveinternet.ru/images/attach/c/7//4829/4829878_neokonchennaya__pesa__dlya_.pdfIn PDF document text
    • http://img1.liveinternet.ru/images/attach/c/7//4829/4829899_vsco__film__05_.pdfIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00059eb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59EB3 9952 bytes
SHA-256: d19f23b81a8a5d1602f36592f82636c72eeeddbd804a6237a16beefbe446584a
font_01_sfnt_off0005b9eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B9EB 14444 bytes
SHA-256: 7803a150ce1fcc296c8d4846055849b389da0131674c8b39628c0d261fcebb99

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