Malicious PDF — malware analysis report

Static analysis result for SHA-256 e59ac5ded1fc79c8…

MALICIOUS

PDF

186.8 KB Created: 2015-08-08 10:49:53 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: bd871b39ec86168095c9c320d1bcf4e1 SHA-1: 4f256fa101575dd08f50a50b723c24a5101d31f4 SHA-256: e59ac5ded1fc79c89d737404b3552d86d21b6d727257a0945bb12656fc6336fb
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 infrastructure. The ML classifier also flagged this PDF with high confidence. The primary malicious indicator is the embedded URL, which likely leads to a phishing page or a malware download. No scripts were extracted from this sample.

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%B0%D0%B2%D0%B8%D1%80%D0%B0+2015+%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%80%D1%83%D1%81%D1%81%D0%BA%D0%B0%D1%8F+%D0%B2%D0%B5%D1%80%D1%81%D0%B8%D1%8F+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384652_skachat_windows_7_home_basic_x64_oem.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384153_skachat_aytyuns_9.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4385/4385688_skachat_admin_hak.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002465b.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2465B 3556 bytes
font_01_sfnt_off000253de.bin
93f19f4d50a6facfc012db6089127518f9c261d0fc54114ddd2c8d951f516a91		 pdf-font-stream PDF embedded font (sfnt) at offset 0x253DE 14668 bytes
font_02_sfnt_off0002815a.bin
b4e7262d3c265b9c03968570e6910e5029d70de81bf1212fa54e1ea61326de8e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2815A 14640 bytes
font_03_sfnt_off0002ac91.bin
b621679715e7157e5977a0b5e89bdd7679273389bd2d8f4fbc1fa28153828c26		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AC91 7112 bytes
font_04_sfnt_off0002c158.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C158 6084 bytes
font_05_sfnt_off0002d0ed.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D0ED 3752 bytes

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