Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8101d9d3a38082c…

MALICIOUS

PDF

188.1 KB Created: 2015-07-23 21:06:25 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 2adf701b6a0dc99a4f977b27288d494d SHA-1: 679f87f17932df33e144f3bc88d19e00e6e1bc69 SHA-256: c8101d9d3a38082cc616f57a00b210c0a40e5e6d3355efb3f0872649b0a191a1
92 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating a redirect to known malicious infrastructure at http://botcraftman.ru/. This strongly suggests the document is designed to lure users to a malicious site. The ML classifier also flagged this PDF with high confidence. No scripts were extracted, but the embedded malicious URL is sufficient evidence for a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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%9E%D1%81%D0%B8%D0%BF+%D0%BD%D0%B0%D0%B7%D0%B0%D1%80%D1%83%D0%BA+%D1%80%D0%BE%D0%BA%D1%81%D0%BE%D0%BB%D0%B0%D0%BD%D0%B0+%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+%D0%BD%D0%B0+%D1%80%D1%83%D1%81%D1%81%D0%BA%D0%BE%D0%BC+%D1%8F%D0%B7%D1%8B%D0%BA%D0%B5&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184825_skachat_heroes_hack_bitva_zamkov.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184696_skachat_upl_dlya_pes_2015_cherez_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184716_klyuch_k_igre_yanki_pri_dvore_korolya_artura.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024b94.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24B94 3556 bytes
font_01_sfnt_off00025917.bin
6c32e525c78c11f2972c1aeb9ab4f39e0d8ff0c43952f8123a91001826c1d22b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25917 14992 bytes
font_02_sfnt_off00028773.bin
c33e6903d76079777c1b082a355654bfa5653b97afd40bc3e5344b34556d24bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28773 14468 bytes
font_03_sfnt_off0002b225.bin
cdef5f168f62df7e965d2aa139a9d889675b7ac74f34d422fe1ea7bb11a0a554		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B225 7044 bytes
font_04_sfnt_off0002c699.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C699 6084 bytes
font_05_sfnt_off0002d62e.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D62E 3752 bytes

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