Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b5c0dbb5fe8a315…

MALICIOUS

PDF

185.6 KB Created: 2015-07-24 13:01:21 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 76f44363c45ef84f6d9b5f77ea6f5b06 SHA-1: 6218cb0f264dcda31c43f6c324e79809d3006ea3 SHA-256: 7b5c0dbb5fe8a31543990829a9e5614d0477478f03e72285f4fd6ac35e9d206e
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also assigned a high probability of maliciousness. The embedded URL, http://botcraftman.ru/..., is the primary indicator of malicious intent, likely serving as a lure for users to download unwanted content or visit a phishing site.

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%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%BC%D0%B0%D0%B9%D0%BD%D0%BA%D1%80%D0%B0%D1%84%D1%82+%D1%81+%D0%BC%D0%BE%D0%B4%D0%BE%D0%BC+industrial+craft&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185588_new_super_mario_bros_u_skachat_torrent_na_pc.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4189/4189773_programma_peredach_na_segodnya_omsk_vse_kanaluy.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4192/4192548_skachat_kartuy_dlya_navitel_nm3.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_off0002a694.bin
8c1b54e2181b99ec50bab8b901609e578027fe22936726f691c173fd34984f0b		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A694 7488 bytes
font_00_sfnt_off0002404c.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2404C 3556 bytes
font_01_sfnt_off00024dcf.bin
e1ee745192b199182e68c159461efdb2bfaf0b418a8ccbeca62d134bb3831716		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24DCF 14584 bytes
font_02_sfnt_off00027b2d.bin
4a2acdf6bddedb9380dd93b3131f795320e8b0872b51e9c1c51fcfd7c4fd60ae		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27B2D 14676 bytes
font_04_sfnt_off0002bcb1.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BCB1 6084 bytes
font_05_sfnt_off0002cc46.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CC46 3752 bytes

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