Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9f71da73a958dec…

MALICIOUS

PDF

186.0 KB Created: 2015-07-23 20:10:12 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 9b3a4b6b9ecec3ebec40363c4dc636f3 SHA-1: 2f7c43bcd0d3c52fa8d399efdd0baf0e47c84fa6 SHA-256: e9f71da73a958dec7474c7f4ac57d29bce1326ac7c4c357ab281136252f28d24
90 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and contains a link to a known malicious redirector infrastructure at http://botcraftman.ru/. This suggests the document is designed to lure users to a potentially harmful website. No scripts were extracted from this sample, limiting the analysis of its specific payload delivery mechanism.

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%BA%D0%BE%D0%B4+%D0%B0%D0%BA%D1%82%D0%B8%D0%B2%D0%B0%D1%86%D0%B8%D0%B8+%D0%B4%D0%BB%D1%8F+kaspersky+internet+security+2015+%D0%BD%D0%B0+90+%D0%B4%D0%BD%D0%B5%D0%B9&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184369_serial_andromeda_skachat_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184428_skachat_sborku_lololoshki_rayskie_pohozhdeniya.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184287_shpargalki_po_algebre_egye_2015.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a693.bin
ca9cb43e766f831e4b42506bc765b080fe6aa5924f5b2410b18e75b72aff140d		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A693 8000 bytes
font_00_sfnt_off000240cf.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x240CF 3556 bytes
font_01_sfnt_off00024e52.bin
c0068a170e13ab20c778b827c9cf8b1cde3bc29b89ef002aadf9a7754e3dfff7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24E52 14248 bytes
font_02_sfnt_off00027b06.bin
1bafb52efd0759955e936bff03cfbca48ebd009e80dd142ff37f8bc9fdae1ca9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27B06 14756 bytes
font_04_sfnt_off0002be59.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BE59 6084 bytes
font_05_sfnt_off0002cdee.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CDEE 3752 bytes

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