Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc923d3f7022a9b5…

MALICIOUS

PDF

183.0 KB Created: 2015-08-08 12:24:35 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: a357903fdc50f06d887517458fc98903 SHA-1: 44e543be44b68ccd5c71c20554b8c0aaf96f2991 SHA-256: fc923d3f7022a9b52e4433837a57e194ad9423809edd94d57ae46607123dc676
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 containing a link to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The embedded URL, http://botcraftman.ru/?lip&keyword=%D1%82%D0%B2+%D0%B1%D0%BE%D0%BA%D1%81+%D0%B0%D0%BD%D0%B4%D1%80%D0%BE%D0%B8%D0%B4&charset=utf-8, is the primary indicator of compromise. No scripts were extracted, and the document body was truncated and unreadable.

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%82%D0%B2+%D0%B1%D0%BE%D0%BA%D1%81+%D0%B0%D0%BD%D0%B4%D1%80%D0%BE%D0%B8%D0%B4&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4388/4388376_skachat_staruye_igruy_alavar.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4387/4387043_speshnev_vvedenie_v_kitayskiy_yazuyk_skachat.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384437_silverfall_skachat_torrent.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023b78.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23B78 3556 bytes
font_01_sfnt_off000248fb.bin
a73c6ac574c90c411a49f67ea2d598d9c5460440dc04bdfb8786ace8bf5ee66f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x248FB 14540 bytes
font_02_sfnt_off000275f0.bin
dde8cb3db78f49492d397de1013a074ab9c596bc0508faa33f94bd64189db0ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x275F0 14468 bytes
font_03_sfnt_off0002a0a3.bin
5c1af66818e59fb681f4a153f59c5190042e910987985dd843df0241e2822d7a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A0A3 6224 bytes
font_04_sfnt_off0002b215.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B215 6084 bytes
font_05_sfnt_off0002c1aa.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C1AA 3752 bytes

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