Malicious PDF — malware analysis report

Static analysis result for SHA-256 a365c7f7ebec2621…

MALICIOUS

PDF

186.9 KB Created: 2015-07-24 11:40:37 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: bcb7fc1d1e061e4b35dd69bfb1129fb4 SHA-1: fde6dcb79cbaff6728c4157ca9df558b7dea2e78 SHA-256: a365c7f7ebec26212ac94385fc8586c71944b120adb3139e81aa9b83db332d57
90 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, http://botcraftman.ru/. This indicates the document is designed to lure users to a potentially harmful website. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, and the document body was not parsable text.

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%BC%D1%8E%D0%BB%D0%BB%D0%B5%D1%80+%D0%B8+%D1%81%D1%8B%D0%BD+%D0%B6%D0%B0%D0%BA%D0%B5%D1%82%D1%8B+%D0%B8+%D0%BF%D0%B0%D0%BB%D1%8C%D1%82%D0%BE+%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&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4187/4187422_bad_piggies_skachat_na_kompyuter.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4187/4187489_koduy_ot_dverey_v_bioshock_2.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4187/4187265_otvetuy_po_fizike_i_exam_ru.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002470b.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2470B 3556 bytes
font_01_sfnt_off0002548e.bin
bb020e53fc8ddec622d271f9df6eed1890daef55a71cc50a4e0ddb89eff79207		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2548E 15372 bytes
font_02_sfnt_off0002833b.bin
2c55dad4c1ee557ce117bdcdfcc221091230b6f73892741738414d5247909151		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2833B 14468 bytes
font_03_sfnt_off0002adea.bin
57a1956585c09c455538f2641f90d3ecc5449532b89d35d5498403d78f8cb5b8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2ADEA 6880 bytes
font_04_sfnt_off0002c1ad.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C1AD 6084 bytes
font_05_sfnt_off0002d142.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D142 3752 bytes

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