Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac13fdd8785e3344…

MALICIOUS

PDF

187.1 KB Created: 2015-07-23 19:55:16 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 1a201fd0f4c68f4db7db8e83993672cf SHA-1: fe2fff0f274bbb51fb93fa78deeeaa8856f5d2c0 SHA-256: ac13fdd8785e33449f431744c69980800943280f678e803584f20c5b427ecf1d
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The embedded URL, http://botcraftman.ru/..., is the primary indicator of malicious intent, likely serving as a lure to a phishing or malware distribution site. No scripts were extracted, and the document body was not sufficiently readable to provide further context.

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=%D0%98%D0%B3%D1%80%D0%B0+%D0%BC%D0%BE%D1%8F+%D1%81%D1%82%D1%80%D0%B0%D0%BD%D0%B0+2020+%D0%B4%D0%BB%D1%8F+%D0%BA%D0%BE%D0%BC%D0%BF%D1%8C%D1%8E%D1%82%D0%B5%D1%80%D0%B0+%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&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4183/4183242_vertikalnuyy_finansovuyy_analiz_primer.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4183/4183182_lampovuyy_tembroblok_shema.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4183/4183198_landshaftnuyy_dizayn_proekt.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000247fb.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x247FB 3556 bytes
font_01_sfnt_off0002557e.bin
4a83179c1e286dbcd2a43fa3d487de91f51abe6ab3d0cc4f87d15c258fe4f5a1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2557E 14568 bytes
font_02_sfnt_off00028380.bin
7f0acd4d45e9c08916015ef2334b8edefb71f7d9b5ae01facc4e30c178776946		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28380 14468 bytes
font_03_sfnt_off0002ae35.bin
7c3e743cfd6802f451e20b910ef8acfee8a957d93108194f337542fe607f5d9c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AE35 7012 bytes
font_04_sfnt_off0002c286.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C286 6084 bytes
font_05_sfnt_off0002d21b.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D21B 3752 bytes

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