Malicious PDF — malware analysis report

Static analysis result for SHA-256 8dfc8e9a7b6b1044…

MALICIOUS

PDF

182.5 KB Created: 2015-08-08 13:06:20 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: ab79cec8ea035d092029ad24925c3650 SHA-1: 53c65660be076dd039bdbe87675c8b5411ef940e SHA-256: 8dfc8e9a7b6b104411af911dcf0fde2d98aba1dc8e7e2b64e4cce134dc477ed4
90 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector. The ML classifier also flagged this PDF with high confidence. The embedded content appears to be obfuscated image data, and no scripts were extracted. The primary attack vector is likely a user clicking the malicious link within the PDF, leading to a compromised website.

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%B2%D0%B8%D1%81%D1%82+%D1%87%D0%B0%D0%B9%D0%BD%D0%B8%D0%BA%D0%B0+%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://img0.liveinternet.ru/images/attach/c/6//4390/4390334_notuy_rozovaya_pantera.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4189/4189988_skachat_sborku_dlya_maynkraft_1710_s_modami.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4388/4388298_skachat_shou_uralskie_pelmeni_vse_vuypuski_torrent.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023a8f.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23A8F 3556 bytes
font_01_sfnt_off00024812.bin
4b1fe0262ba46f715d32fd5fdfc531a995d62302fce729530281b1ba97192863		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24812 13992 bytes
font_02_sfnt_off00027440.bin
c33e6903d76079777c1b082a355654bfa5653b97afd40bc3e5344b34556d24bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27440 14468 bytes
font_03_sfnt_off00029ef2.bin
7f4e92908a5d4890061692b307236159c885c55a84e1190c71f4091e60bfb524		 pdf-font-stream PDF embedded font (sfnt) at offset 0x29EF2 6128 bytes
font_04_sfnt_off0002b005.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B005 6084 bytes
font_05_sfnt_off0002bf9a.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BF9A 3752 bytes

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