Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fa4eecbe1568158…

MALICIOUS

PDF

183.4 KB Created: 2015-07-26 05:53:17 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: ac5e37dc4af297b437a7bd157ec33ea2 SHA-1: 174a72b56d4826b2ab84cdb2599e46be76d2d050 SHA-256: 2fa4eecbe15681585ac66ed18e2722e26325722e7590c5a9102cb2dbd144ad73
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, indicating an attempt to lure the user to a harmful 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=stalmine+v+04+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4197/4197549_a_po_lesu_ya_idu_tyapkoy_krolikov_glushu_tekst.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4197/4197028_batman_arkham_origins_karta_retranslyatorov.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4191/4191842_skachat_windows_81_x32_rus_torrent_s_aktivatorom.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000239e0.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x239E0 3556 bytes
font_01_sfnt_off00024763.bin
a83bfd9fdf1315a5e4dba33891d7bdb3175f192c8fd7a42673ff64df70b4021f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24763 14552 bytes
font_02_sfnt_off000273f5.bin
bc40c0e6839cdf9841a88d8ccb21e3a71631095bf6e041fd9fd065bc08fea97c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x273F5 15008 bytes
font_03_sfnt_off0002a05d.bin
0fca4abeb2ab86d3ea5c1fb89514d05f3b474237b40dbc97c3357372ba3f60d4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A05D 6716 bytes
font_04_sfnt_off0002b3ac.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B3AC 6084 bytes
font_05_sfnt_off0002c341.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C341 3752 bytes

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