Malicious PDF — malware analysis report

Static analysis result for SHA-256 21e5dfa42aa2eead…

MALICIOUS

PDF

186.1 KB Created: 2015-07-25 03:16:41 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: fb3fc8b60e681807462828b80e13192d SHA-1: 3a9028693e4f03a6b01ee1d3424ea6fe113a620a SHA-256: 21e5dfa42aa2eeaddff564586aa60d48a66ce2faf1809ab07390d4cfb5f52202
90 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. This suggests the document is designed to lure users to a malicious website. No scripts were extracted, and the document body was truncated, limiting further analysis of the exact lure.

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%D1%82%D0%B0%D0%BD%D0%B4%D0%B0%D1%80%D1%82%D0%BD%D1%8B%D0%B5+%D0%BD%D0%B0%D0%BB%D0%BE%D0%B3%D0%BE%D0%B2%D1%8B%D0%B5+%D0%B2%D1%8B%D1%87%D0%B5%D1%82%D1%8B+%D0%BA%D0%BE%D0%B4%D1%8B+104-105+114-125&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4191/4191137_alex_claire__too_close_skachat.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4198/4198233_balkan_kar_dv_179245m_instrukciya_po_remontu.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184330_dogovor_brigadnogo_podryada_skachat.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024446.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24446 3556 bytes
font_01_sfnt_off000251c9.bin
5668b398757239cea5c8ba749c7d36ad8ec015bcb1ed66e5e29b002c18dd6fe7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x251C9 14848 bytes
font_02_sfnt_off00027fa2.bin
bffa1ae8d90aeab1b74e8d44807ac443ca597f70d6552458eac4e679076581ae		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27FA2 14640 bytes
font_03_sfnt_off0002aad9.bin
4c5ed1abd1cf0adb6360bf410f02b2550462278e7deb329926be2cc52673c06c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AAD9 6840 bytes
font_04_sfnt_off0002bec0.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BEC0 6084 bytes
font_05_sfnt_off0002ce55.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CE55 3752 bytes

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