Malicious PDF — malware analysis report

Static analysis result for SHA-256 82e9130253f0d8a3…

MALICIOUS

PDF

187.0 KB Created: 2015-07-24 01:14:06 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 003953da858475cdf69108d44f883ff5 SHA-1: 80d0c42483e910e9548edd5fed446dbb2e160bab SHA-256: 82e9130253f0d8a362eac92c0ac5c3f6b5384daebcb74dadbdebdd68fd47cafb
90 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing indicating a link to known malicious redirector infrastructure. The ML classifier also flagged the document with high confidence. The embedded URL, http://botcraftman.ru/..., is the primary indicator of malicious intent, likely serving as a lure to a phishing or malware distribution site. No scripts were extracted, and the document body was truncated, limiting further analysis of the delivery mechanism.

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%A1%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%81%D1%85%D0%B5%D0%BC%D0%B0+%D0%B1%D0%BB%D0%BE%D0%BA+%D0%BF%D1%80%D0%B5%D0%B4%D0%BE%D1%85%D1%80%D0%B0%D0%BD%D0%B8%D1%82%D0%B5%D0%BB%D0%B5%D0%B9+%D0%B3%D0%BE%D0%BB%D1%8C%D1%84+5&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185527_video_po_zamene_remnya_na_stiralnoy_mashinke_samsung_s803j.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184659_skachat_igru_zuma_2_besplatno_cherez_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185889_skachat_operu_bezplatno.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024630.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24630 3556 bytes
font_01_sfnt_off000253b3.bin
2842e1126649beaf8c05e38264cbcd2e01fd69ead1fc8835c30d7d48504df917		 pdf-font-stream PDF embedded font (sfnt) at offset 0x253B3 14828 bytes
font_02_sfnt_off000281ce.bin
9a2752e98ba637126da91073b975ab12c495456bfe13f51c2d386f3ae1956523		 pdf-font-stream PDF embedded font (sfnt) at offset 0x281CE 14708 bytes
font_03_sfnt_off0002ad40.bin
a0ab7bf2b212fdce8b9230ad81152e2fc0e1d74991a0493c81f178198272dfef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AD40 7140 bytes
font_04_sfnt_off0002c20c.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C20C 6084 bytes
font_05_sfnt_off0002d1a1.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D1A1 3752 bytes

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