Malicious PDF — malware analysis report

Static analysis result for SHA-256 778fe57002438ec1…

MALICIOUS

PDF

185.6 KB Created: 2015-08-08 10:00:24 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: a1d25425739499589e8d7e9399f0d269 SHA-1: 2c2fa3ca672fd5f6f1b1165c99d2be1d87b4b612 SHA-256: 778fe57002438ec10e515e9fde673af6ad96725c3a6271cba51d73a1cafc5d5a
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a link to a known malicious redirector, indicating an attempt to lead 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 suggests a phishing or malware distribution attempt.

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=windows+7+iso+%D0%BE%D0%B1%D1%80%D0%B0%D0%B7+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%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//4384/4384521_pravila_dlya_igruy_bez_pravil_kristina_komafordlinch_pdf.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384594_angliyskiy_yazuyk_dlya_fizkulturnuyh_specialnostey.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383740_irlandskoe_kruzhevo_shemuy_modeli_opisaniya.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_off0002a845.bin
bded65d23f105f6a3d7b53f0ba3398ec7d45ef581ecc49b0906ab2dfcdf8c63f		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A845 7060 bytes
font_00_sfnt_off00024146.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24146 3556 bytes
font_01_sfnt_off00024ec9.bin
f05624e6c0aee7b85115dc2a24ac871b5d930b6a103a46d60dc7288f26514733		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24EC9 14756 bytes
font_02_sfnt_off00027d24.bin
f829e28636adc5a28ffc5f254a487f89986a1e0022a8de08da441de7f82114bf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27D24 14584 bytes
font_04_sfnt_off0002bcba.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BCBA 6084 bytes
font_05_sfnt_off0002cc4f.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CC4F 3752 bytes

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