Malicious PDF — malware analysis report

Static analysis result for SHA-256 58d838cd89233e18…

MALICIOUS

PDF

186.3 KB Created: 2015-07-24 11:32:35 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 0329b68f4fb3b71f830607bb289f97b0 SHA-1: 5359e8bfcef5e46d032613604854e7875b265cf2 SHA-256: 58d838cd89233e189904ff681162584c640b2a5a2dba0463c514320fa9d3866c
90 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, botcraftman.ru. This indicates the document is designed to lure the user to a malicious site. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the embedded URL is sufficient evidence of malicious intent.

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%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%BA%D1%80%D0%B0%D1%81%D0%B8%D0%B2%D1%8B%D0%B5+%D1%80%D0%B0%D0%BC%D0%BA%D0%B8+%D0%B4%D0%BB%D1%8F+word+%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://img0.liveinternet.ru/images/attach/c/5//4184/4184554_sims_3_polnaya_antologiya_19_v_1_skachat_torrent_besplatno.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4192/4192090_programma_diagnostiki_dlya_ssangyong.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4191/4191959_skachat_skayp_besplatno_i_bez_registracii_na_russkom_yazuyke.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000243f0.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x243F0 3556 bytes
font_01_sfnt_off00025173.bin
d24cae636d65d61513ac21c89a961fda390ba8705cf5328e724dd6987f0b8d63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25173 14692 bytes
font_02_sfnt_off00027f02.bin
c821eec3b4e9eb738fa5a661a2f40f3108ce92144a842caba4088a967c1d0cb9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27F02 14536 bytes
font_03_sfnt_off0002a9f0.bin
4fa7313ed48141823ea82762fc79a8d83a3c458a101d7e992242c253808329cb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A9F0 7392 bytes
font_04_sfnt_off0002bf95.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BF95 6084 bytes
font_05_sfnt_off0002cf2a.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CF2A 3752 bytes

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