Malicious PDF — malware analysis report

Static analysis result for SHA-256 0368790f86cf9a22…

MALICIOUS

PDF

185.1 KB Created: 2015-07-24 11:21:15 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 23dcc5bb41d8b28541e23516ffe1c66c SHA-1: b75bf8bb927f532f3f44a6f6732160f3055e6a87 SHA-256: 0368790f86cf9a2252672b821ffa5a2b588975e959cbf7aa26fa27e0d2e7505e
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, botcraftman.ru, which is indicative of a phishing or malware distribution attempt. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the embedded URL is the primary indicator of malicious intent.

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=counter+strike+source+v77+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4186/4186406_sboy_konvertera_pri_otkruytii_fayla_xlsx.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184803_putevoditel_po_kruymu_skachat.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4191/4191632_otkruytuyy_urok_po_matematike_v_5_klasse_po_fgos.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_off0002a5b3.bin
f354082e95edab63e472a5f15e0aec6cffddb3bbcfaa233ff52947ffcf53e913		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A5B3 7140 bytes
font_00_sfnt_off00023fed.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23FED 3556 bytes
font_01_sfnt_off00024d70.bin
33abc3e0399a26adf6c55eb1249591e2d312deb28b4069af1842b250114b2a49		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24D70 14300 bytes
font_02_sfnt_off00027a37.bin
a7c8e0122bc86bb51835005dd6c8a04700f8a5faffc7ad4d9678a02574842242		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27A37 14892 bytes
font_04_sfnt_off0002ba87.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BA87 6084 bytes
font_05_sfnt_off0002ca1c.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CA1C 3752 bytes

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