Malicious PDF — malware analysis report

Static analysis result for SHA-256 6651ad120ca32ff6…

MALICIOUS

PDF

185.8 KB Created: 2015-07-23 21:13:39 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 52234a7fde9cd8f1353ae9d8fff9c3b6 SHA-1: 15ea67ff87634828e30bb50dae8b113b758400de SHA-256: 6651ad120ca32ff66e07268f6ee5e76f44aaa80e635545dee6041128a4d348dc
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to known malicious redirector infrastructure, indicating an attempt to lure the user to a harmful site. The ML classifier also flagged this PDF with high confidence. No scripts were extracted, but the presence of a malicious 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=%D0%A1%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B0%D0%BA%D1%82%D0%B8%D0%B2%D0%B0%D1%82%D0%BE%D1%80+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+%D0%BA%D1%80%D1%8F%D0%BA&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184862_licenzionnuyy_klyuch_dlya_navitel.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4183/4183243_urok_3.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184432_chuzhestranka_2_sezon_skachat_torrent.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_off0002a86e.bin
e8432aa8d1d03fe7175661f8f178b609db39630f7cfec5a23a4331c12752ff0d		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A86E 7172 bytes
font_00_sfnt_off00024204.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24204 3556 bytes
font_01_sfnt_off00024f87.bin
2f1c34f3cabb3b057207d9033e9977c796d34e9c4ed7efe64b9e6d002118b1a2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24F87 14628 bytes
font_02_sfnt_off00027d4e.bin
9d90e18ee50434addfa8c210065a1461feda93b1cad23cebf91f15991c29ade2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27D4E 14584 bytes
font_04_sfnt_off0002bd60.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BD60 6084 bytes
font_05_sfnt_off0002ccf5.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CCF5 3752 bytes

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