Malicious PDF — malware analysis report

Static analysis result for SHA-256 9bd8eaa2ce9b644a…

MALICIOUS

PDF

186.3 KB Created: 2015-08-08 09:42:33 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: ed37475848604b1925d4e7632533843c SHA-1: 43bfbffdcabe4c42ff64917a2c792fa221f0a2fd SHA-256: 9bd8eaa2ce9b644a675fd38cd3ba7f97d0c407d752feeecf9d275b473b0e876a
92 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 this PDF with high confidence. The primary malicious IOC is the URL http://botcraftman.ru/, which is likely used to deliver a secondary payload or conduct a phishing attack. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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%80%D0%B0%D1%81%D0%BF%D0%B8%D1%81%D0%B0%D0%BD%D0%B8%D0%B5+%D0%B0%D0%B2%D1%82%D0%BE%D0%B1%D1%83%D1%81%D0%BE%D0%B2+%D1%8D%D0%BD%D0%B5%D1%80%D0%B3%D0%BE%D0%B4%D0%B0%D1%80+%D0%BA%D0%B0%D0%BC%D0%B5%D0%BD%D0%BA%D0%B0+%D1%87%D0%B5%D1%80%D0%B5%D0%B7+%D0%BC%D0%B8%D1%87%D1%83%D1%80%D0%B8%D0%BD%D0%BE&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384158_programma_dlya_zapisi_pesen_v_domashnih_usloviyah.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383817_saminside_instrukciya.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384053_disbat_na_russkom_ostrove.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002466c.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2466C 3556 bytes
font_01_sfnt_off000253ef.bin
385f52a462823f4811bfc3ce40673692bc300d0cbb1cbd1a79ea3a50fb93e660		 pdf-font-stream PDF embedded font (sfnt) at offset 0x253EF 14412 bytes
font_02_sfnt_off00028078.bin
2faf238a7982558102f008fa2e03cbd823800727545a7f10afda32250c8cbf2a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28078 14468 bytes
font_03_sfnt_off0002ab2b.bin
a6476057ddfe010331034621625d3213dfa831abe567231ab40a1da9fc5d6edd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AB2B 6960 bytes
font_04_sfnt_off0002bf60.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BF60 6084 bytes
font_05_sfnt_off0002cef5.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CEF5 3752 bytes

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