Malicious PDF — malware analysis report

Static analysis result for SHA-256 664006a3f80fb6ec…

MALICIOUS

PDF

186.7 KB Created: 2015-08-05 13:41:24 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 18d4d72d66da01658c80b833edde2e73 SHA-1: 5a6a4f6d9bab3fa2721509e451b486c9518fe716 SHA-256: 664006a3f80fb6ec2c1653e20d8853d441f1918dcf50b39e116fde4f02516ef3
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

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 flagged this PDF with high confidence. While no scripts were directly extracted, the presence of embedded URLs and the heuristic firings strongly suggest a malicious intent to redirect the user.

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%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE+%D1%84%D0%B8%D0%BB%D1%8C%D0%BC+%D0%BD%D0%B0+%D0%BC%D0%BE%D0%B1%D0%B8%D0%BB%D1%8C%D0%BD%D1%8B%D0%B9+%D1%82%D0%B5%D0%BB%D0%B5%D1%84%D0%BE%D0%BD&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304689_skachat_vindovs_7_maksimalnuyy_cherez_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304652_skachat_drayvera_windows_7.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304479_klyuchi_dlya_windows_anytime_upgrade.pdf
    • http://www.microsoft.com/typography/fonts/
    • http://www.microsoft.com/typography/fonts/You

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024831.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24831 3556 bytes
font_01_sfnt_off000255b4.bin
77b542c20c26f27a7a7907c715f3cdc800d82d3e5d9f757c314fa6e5a8f4661c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x255B4 14420 bytes
font_02_sfnt_off00028281.bin
c33e6903d76079777c1b082a355654bfa5653b97afd40bc3e5344b34556d24bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28281 14468 bytes
font_03_sfnt_off0002ad33.bin
357821842e4bd509ca7d48ccc6caa81ea6caba82c1265be5c5bf869e4f9c1d68		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AD33 6868 bytes
font_04_sfnt_off0002c0f5.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C0F5 6084 bytes
font_05_sfnt_off0002d08a.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D08A 3752 bytes

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