Malicious PDF — malware analysis report

Static analysis result for SHA-256 98601c4b135acd30…

MALICIOUS

PDF

186.8 KB Created: 2015-08-05 16:43:13 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 3810223cd6c14c5367453d9cdb93f465 SHA-1: 8a2be31b21604c326abfe5b02ca090ccd54b562b SHA-256: 98601c4b135acd30d3dc66f38ac2ae509d55b5db90763e0fb5a73058cf51da1d
90 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics as malicious, specifically for containing a link to known malicious redirector infrastructure. The embedded URL points to 'botcraftman.ru', which is identified as a malicious redirector. This suggests the document's primary purpose is to lure users to a harmful website, likely for phishing or malware delivery. No scripts were extracted, and the document body was heavily truncated, limiting further analysis of the specific 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=%D0%BF%D1%80%D0%BE%D0%B3%D1%80%D0%B0%D0%BC%D0%BC%D0%B0+%D0%B4%D0%BB%D1%8F+%D1%81%D0%BE%D0%B7%D0%B4%D0%B0%D0%BD%D0%B8%D1%8F+%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE%D0%BF%D0%BE%D0%B7%D0%B4%D1%80%D0%B0%D0%B2%D0%BB%D0%B5%D0%BD%D0%B8%D0%B9&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/6//4305/4305757_skachat_klient_maynkraft_147_s_modami_ot_lololoshki.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304987_kazantetyushi_raspisanie_avtobusov.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304666_kak_pravilno_napisat_blagodarnost_obrazec.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000246db.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x246DB 3556 bytes
font_01_sfnt_off0002545e.bin
adb091e016b2351a00601d9771390a2e52dcfdd5801fcd96d37ef196ec246498		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2545E 15092 bytes
font_02_sfnt_off00028385.bin
dde8cb3db78f49492d397de1013a074ab9c596bc0508faa33f94bd64189db0ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28385 14468 bytes
font_03_sfnt_off0002ae38.bin
5863b78583713433d65ec0cc864b8d81e18c34961b66c4023965a95bba9e1c41		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AE38 6656 bytes
font_04_sfnt_off0002c13c.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C13C 6084 bytes
font_05_sfnt_off0002d0d1.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D0D1 3752 bytes

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