Malicious PDF — malware analysis report

Static analysis result for SHA-256 de07fd1bf2be9dca…

MALICIOUS

PDF

184.8 KB Created: 2015-07-26 09:49:06 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: a4318f711e1dd9303d17ae88d559e1b3 SHA-1: 896cd5489e3a43100c2c658d39afb1743f6b1363 SHA-256: de07fd1bf2be9dca2924f1a06b4eae7b9c5ef5ff25f422fe0fd7d8e82702708a
90 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics as malicious, specifically for containing a link to a known malicious redirector. The ML classifier also assigned a high probability of maliciousness. The embedded URL points to botcraftman.ru, which is identified as malicious infrastructure. No scripts were extracted, and the document body was not sufficiently informative to determine a specific lure.

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%A8%D0%B0%D0%B1%D0%BB%D0%BE%D0%BD+%D1%87%D0%B5%D1%80%D1%82%D0%B5%D0%B6%D0%BD%D0%BE%D0%B9+%D1%80%D0%B0%D0%BC%D0%BA%D0%B8+%D0%B04+%D0%B0%D0%BB%D1%8C%D0%B1%D0%BE%D0%BC%D0%BD%D0%B0%D1%8F&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4189/4189831_ginekolog_osmotr_pervuyy_raz_14_let_video.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185532_skachat_igru_maynkraft_172_s_100_modami_cherez_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4212/4212655_skachat_vse_albomuy_korol_i_shut_cherez_torrent.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024064.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24064 3556 bytes
font_01_sfnt_off00024de7.bin
5387b1f5651456214b2e23dd487dc0e26cf144faa0a86d6e156676b13afad6ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24DE7 14308 bytes
font_02_sfnt_off00027ab3.bin
a13461c35391680bec7f51cc4a620ca3cd9711cfcf32fa2dff3f0c9ed561eed4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27AB3 14520 bytes
font_03_sfnt_off0002a58c.bin
c8f91760d33d44f47855bc5913fa0e05f7f481a1e10c977dc944eb20c919eb06		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A58C 6888 bytes
font_04_sfnt_off0002b93f.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B93F 6084 bytes
font_05_sfnt_off0002c8d4.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C8D4 3752 bytes

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