Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a3befb239a34f29…

MALICIOUS

PDF

185.1 KB Created: 2015-07-27 19:50:12 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 390029b27f371905f82f9665a2785d73 SHA-1: 4048bd608b70ad15a50521420aa3b4c89285958e SHA-256: 7a3befb239a34f29e57b7821777dd536403043c531c4b8619c26736b3e50fb01
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains an embedded URL that is flagged as a malicious redirector. The ML classifier also strongly indicated maliciousness. The primary attack vector appears to be directing the user to the malicious domain http://botcraftman.ru/ for further exploitation, likely a phishing or malware download attempt.

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%90%D0%BA%D1%82%D0%B8%D0%B2%D0%B0%D1%82%D0%BE%D1%80+%D0%B4%D0%BB%D1%8F+windows+7+%D0%BC%D0%B0%D0%BA%D1%81%D0%B8%D0%BC%D0%B0%D0%BB%D1%8C%D0%BD%D0%B0%D1%8F&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4204/4204896_igruy_dlya_symbian_94_360x640_skachat_besplatno_polnuyu_versiyu.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184364_prohozhdenie_stalker_zateryannuyy_mir.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4196/4196820_skachat_maynkraft_server_152_exe.pdf
    • http://www.microsoft.com/typography/fonts/You
    • http://www.microsoft.com/typography/fonts/

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a5c4.bin
12cee5432a6cbe9ec2794aa0dc64d56b84602334590dd46a2c97a85203ca3973		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A5C4 7152 bytes
font_00_sfnt_off00023f92.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23F92 3556 bytes
font_01_sfnt_off00024d15.bin
0eed69d163c6831de7b956d7a01310573b4cd6a2699aac8933d90463623f057c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24D15 14752 bytes
font_02_sfnt_off00027aa3.bin
91d4a5e70bb6505a4d7e49a94951645e049c5f6e4b7ec6b126e3d70fe325feef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27AA3 14584 bytes
font_04_sfnt_off0002ba9d.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BA9D 6084 bytes
font_05_sfnt_off0002ca32.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CA32 3752 bytes

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