Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c61f8d20f2b5d15…

MALICIOUS

PDF

187.3 KB Created: 2015-07-26 09:22:56 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 02aa90a3d6f22e7d2f1da6033aa3615a SHA-1: c62a0bcc73b4e5c00b56f4acfcc8e79fa3c1a70c SHA-256: 4c61f8d20f2b5d15a0e8929b928c7c4acdce10f24a978072ef768d92f505ba87
90 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and contains a direct link to a known malicious redirector. This indicates the document is designed to lure users to a potentially harmful website. No scripts were extracted, but the presence of the malicious URL is a strong indicator 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=%D1%81%D0%BC%D0%B5%D1%82%D0%B0+%D0%BD%D0%B0+%D1%81%D1%82%D1%80%D0%BE%D0%B8%D1%82%D0%B5%D0%BB%D1%8C%D1%81%D1%82%D0%B2%D0%BE+%D0%B4%D0%BE%D0%BC%D0%B0+%D0%B4%D0%BB%D1%8F+%D1%81%D0%B1%D0%B5%D1%80%D0%B1%D0%B0%D0%BD%D0%BA%D0%B0+%D0%BE%D0%B1%D1%80%D0%B0%D0%B7%D0%B5%D1%86&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4194/4194236_freedom_skachat_na_android_s_rut_pravami.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4212/4212123_dlinnuye_narduy_skachat_dlya_windows_7.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4189/4189492_svinka_pepa_vse_serii_podryad_skachat.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000248a8.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x248A8 3556 bytes
font_01_sfnt_off0002562b.bin
f8ba3c8df73fbe0b26f4c152dd8a3bbd60c9293e3dbb93808323d91adf2c09bf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2562B 14708 bytes
font_02_sfnt_off00028469.bin
dde8cb3db78f49492d397de1013a074ab9c596bc0508faa33f94bd64189db0ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28469 14468 bytes
font_03_sfnt_off0002af1c.bin
e8013fe6b0c2cbec86eb28b8632fd7788bb76694eb9b653ce756a60ea88e9893		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AF1C 7008 bytes
font_04_sfnt_off0002c368.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C368 6084 bytes
font_05_sfnt_off0002d2fd.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D2FD 3752 bytes

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