Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f62be2233ee4ee3…

MALICIOUS

PDF

185.2 KB Created: 2015-08-08 12:32:07 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 08f884b6ee085fc4937cb9afbfeffede SHA-1: 431572aba5e0ff8acae86afda708f82f17df3e5f SHA-256: 1f62be2233ee4ee334379f13bbb177ccf3f47dc3be8e388b28a28dd5fc64cf2b
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 PDF with high confidence. The embedded URL points to botcraftman.ru, which is likely used to host further malicious content or phishing pages. No scripts were extracted from this sample.

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=gns3+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%BD%D0%B0+%D1%80%D1%83%D1%81%D1%81%D0%BA%D0%BE%D0%BC&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384899_skachat_flesh_pleer_na_telefon_fly_bl4037.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4386/4386845_konkurentnuyy_list_obrazec_rb.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4385/4385071_chitat_onlayn_konan_kimmeriec.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a822.bin
a8cd645f73b18b6cbf2f817275fe2cd3e63fcecdeef866e8817c248d8205f14f		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A822 6556 bytes
font_00_sfnt_off00023faa.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23FAA 3556 bytes
font_01_sfnt_off00024d2d.bin
a0783505b4c895b40b158a58957f20f6b31eb501d4a826744f428c6b339fb627		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24D2D 15248 bytes
font_02_sfnt_off00027cf9.bin
d5149b7cba07ad7023bcd46455950521859283d0b060ad85ff5238f058e17614		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27CF9 14616 bytes
font_04_sfnt_off0002baf5.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BAF5 6084 bytes
font_05_sfnt_off0002ca8a.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CA8A 3752 bytes

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