Malicious PDF — malware analysis report

Static analysis result for SHA-256 a52e5353a41c3a81…

MALICIOUS

PDF

185.4 KB Created: 2015-08-08 10:03:19 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: f8b9caf4ad152e421a5ae406e05918eb SHA-1: 40a471f0993c2349f02f020c68c13ca81ef38fda SHA-256: a52e5353a41c3a81cfff4ecc7287b3273ba3ceddfe0e5285c944023bf0329601
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also assigned a high probability of maliciousness. The embedded URL points to botcraftman.ru, which is associated with malicious redirector activity. This suggests the document is designed to lure users to a harmful website.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

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%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%BA%D1%80%D1%8F%D0%BA+%D0%BE%D1%82+theta+%D0%B4%D0%BB%D1%8F+max+payne+3&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384916_kantorovich_aleksandr_desant_popadancev_audiokniga.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384496_windows_8_professional_with_media_center_x64_russian_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384225_proshivka_dlya_vaz_2114.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023fa5.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23FA5 3556 bytes
font_01_sfnt_off00024d28.bin
1aaea8e3602d034b044fa0fd735e844b2efcaaa73f6daf661e8c94fee34945c3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24D28 15016 bytes
font_02_sfnt_off00027b3a.bin
5085d3a7069f8539a41713e3aaf20752bc5ee4cd374c605b5301c9f067e5eea9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27B3A 14912 bytes
font_03_sfnt_off0002a71a.bin
19622fa11d0495b94247d73c1a5198e29c2149c9851995bc2c1aeebc5d1c89b8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A71A 7148 bytes
font_04_sfnt_off0002bbff.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BBFF 6084 bytes
font_05_sfnt_off0002cb94.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CB94 3752 bytes

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