Malicious PDF — malware analysis report

Static analysis result for SHA-256 096305be418ea398…

MALICIOUS

PDF

184.9 KB Created: 2015-07-24 12:58:17 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: f8a0bddeffe73a7eb9c127690f933469 SHA-1: 481b2dc0a60db164b308be92a1c9d23388d780b5 SHA-256: 096305be418ea3981dda8c08b83ee8330d415158d0f3c157da2a457594bb43f8
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by multiple heuristics as malicious, including a critical finding for a link to a known malicious redirector. The ML classifier also assigned a high probability of maliciousness. The embedded URL points to a redirector that likely serves as a lure for users to download malicious content or visit a phishing site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 3

  • 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.
  • ClamAV: Pdf.Dropper.Agent-7493048-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7493048-0
  • 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+3d+instructor+2+home+keygen&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184670_yubiley_60_let_zhenschine_prikolnuyy_scenariy.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184371_skachat_blok_launcher_pro_dlya_maynkraft_095.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184640_mahabharata_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_off0002a431.bin
3beed1d6602df339c8fd45b3bb8ec4f3569ad123f11d10733264e8380904b059		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A431 7380 bytes
font_00_sfnt_off00023d1d.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23D1D 3556 bytes
font_01_sfnt_off00024aa0.bin
d296fe84f8b17f5bbbe2b768f221f8ef1b4bdf9a7c993bd5df5c3bc6c2db9502		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24AA0 14632 bytes
font_02_sfnt_off00027897.bin
7e0071c1a8a42a00f05cd952256d2ec0250b1ada235cf89738ca1dc49a0c5076		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27897 14844 bytes
font_04_sfnt_off0002b9db.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B9DB 6084 bytes
font_05_sfnt_off0002c970.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C970 3752 bytes

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