Malicious PDF — malware analysis report

Static analysis result for SHA-256 1248a3d8f466005b…

MALICIOUS

PDF

362.9 KB Created: 2015-08-28 00:00:51 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 5e908e6ab3330c115db03e3a15eb6d50 SHA-1: b32805fde7e21f78f97993c1e6442fbb4446d360 SHA-256: 1248a3d8f466005b3bdf4d60b2f75bd76e3697f6afef4820f7fe7246b7ef4568
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document was flagged by a critical heuristic for linking to a known malicious redirector. The ML classifier also strongly indicated maliciousness. While no scripts were extracted, the presence of the malicious URL suggests an attempt to lure the user to a harmful site, likely for phishing or malware delivery. The document body was unreadable, preventing further analysis of its specific content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

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%8D%D0%BB%D0%B5%D0%BA%D1%82%D1%80%D0%BE+%D1%81%D1%85%D0%B5%D0%BC%D0%B0+%D0%B8%D0%B6+%D0%BF%D0%BB%D0%B0%D0%BD%D0%B5%D1%82%D0%B0+5&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4787/4787929_aist__09__almatuy_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4788/4788317_tuy__obyazatelno__polyubish_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4788/4788328_dzhodzho__moyes__odin_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000567d2.bin
5e91d0b900096084bcac370f80eb326061d9e01ee91f769d7e7f792c941bfd93		 pdf-font-stream PDF embedded font (sfnt) at offset 0x567D2 8372 bytes
font_01_sfnt_off00058020.bin
1ce36e80d90bb8df5ae1a84f50746894ac4bd41e2611b68f9c3208a840e44d56		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58020 13868 bytes

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