Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8a7b96773d83c79…

MALICIOUS

PDF

188.1 KB Created: 2015-07-25 00:35:30 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 47362f40e565db11abfe54c999f38317 SHA-1: e5c843119043b58d9c2c3bd4f66f748f13ae336b SHA-256: c8a7b96773d83c79a6f58abf91871fb2939605c6492ca3380b56c4fb9d791a1c
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The ClamAV detection further confirms its malicious nature as a Pdf.Dropper.Agent. The embedded URL, http://botcraftman.ru/, is the primary indicator of compromise. No scripts were extracted, but the PDF structure and the malicious URL strongly suggest a delivery mechanism for further malicious activity.

Heuristics 3

  • 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.
  • ClamAV: Pdf.Dropper.Agent-8789614-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-8789614-0
  • 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%B7%D0%B0%D0%B4%D0%B0%D0%BD%D0%B8%D1%8F+%D0%BF%D0%BE+%D0%BC%D0%B0%D1%82%D0%B5%D0%BC%D0%B0%D1%82%D0%B8%D0%BA%D0%B5+%D0%B4%D0%BB%D1%8F+%D0%B1%D1%83%D0%B4%D1%83%D1%89%D0%B8%D1%85+%D0%BF%D0%B5%D1%80%D0%B2%D0%BE%D0%BA%D0%BB%D0%B0%D1%81%D1%81%D0%BD%D0%B8%D0%BA%D0%BE%D0%B2&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4192/4192131_kinostar_tv_player_13_portable_rus_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4191/4191574_primeruy_podarochnuyh_sertifikatov.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4196/4196096_luchshaya_noch_tekst_pesni.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024a7c.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24A7C 3556 bytes
font_01_sfnt_off000257ff.bin
3c791e9130087d6bf5c21bff29545af7bd9844fd94c6ca31bc01f5ff26f48746		 pdf-font-stream PDF embedded font (sfnt) at offset 0x257FF 15016 bytes
font_02_sfnt_off00028676.bin
94be5f10322233df1a9459c66b95e33f4079736c10c4fa5421efd90be174998c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28676 14788 bytes
font_03_sfnt_off0002b220.bin
5a90a262d7f772ce7d3484ccca774629b798eca103f64e7bf83f90d9fbfd2df4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B220 7028 bytes
font_04_sfnt_off0002c681.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C681 6084 bytes
font_05_sfnt_off0002d616.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D616 3752 bytes

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