Malicious PDF — malware analysis report

Static analysis result for SHA-256 bac68e078b7c61e3…

MALICIOUS

PDF

184.9 KB Created: 2015-07-24 19:07:28 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 21f94a923f79dee2229c54d5ba0c8596 SHA-1: 3f891a62950e8b556046a6396bfa1e4e350717d4 SHA-256: bac68e078b7c61e3a4f52799235f9fe4b7febe3a7ebc2ab268d255d46bbe09a0
92 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and contains a link to a known malicious redirector. The embedded URL 'http://botcraftman.ru/?lip&keyword=Minicom+%D0%B4%D0%BB%D1%8F+windows+7+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C&charset=utf-8' is the primary indicator of malicious intent. No scripts were extracted, and the document body was truncated, limiting further analysis of the delivery mechanism.

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=Minicom+%D0%B4%D0%BB%D1%8F+windows+7+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4192/4192859_scenariy_den_medika.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4187/4187077_infamous_second_son_na_pc_skachat_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4193/4193615_auslogics_boostspeed_4411215_rus_skachat_torrent.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a5f9.bin
935e100465859ac656bda5e10fbc9b8bf34f545609c292e77eed5f14cf98e638		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A5F9 6904 bytes
font_00_sfnt_off00023e2a.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23E2A 3556 bytes
font_01_sfnt_off00024bad.bin
4e1a734bd6d9139c38949b40b4bababa714bc80bc30df632ffcd80379215ad83		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24BAD 14888 bytes
font_02_sfnt_off00027a63.bin
e003184c83ddc0fc800aeb80ef1eebc2885bfd1e55a185488b2c7e7dcd7abc22		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27A63 14748 bytes
font_04_sfnt_off0002b9eb.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B9EB 6084 bytes
font_05_sfnt_off0002c980.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C980 3752 bytes

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