Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb591b2dbfb6dd94…

MALICIOUS

PDF

186.2 KB Created: 2015-07-25 02:26:02 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: c57a5d8dafbd6fac7a697302025e7c2b SHA-1: 7a824094854c407108c766c4d64da7cc3d04e3c7 SHA-256: fb591b2dbfb6dd941dd7762071dc79aa879555daccdb8443b303c30fd9b836f2
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. This suggests the document is designed to lure users to a harmful website.

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%B0%D0%BA+%D0%BF%D1%80%D0%B8%D1%80%D1%83%D1%87%D0%B8%D1%82%D1%8C+%D0%B4%D1%80%D0%B0%D0%BA%D0%BE%D0%BD%D0%B0+%D0%B8%D0%B3%D1%80%D0%B0+%D0%BD%D0%B0+pc+%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://img1.liveinternet.ru/images/attach/c/5//4195/4195381_yelektronnuye_knigi_skachat_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4188/4188929_notuy_titanik_dlya_skripki.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4192/4192934_osnovnuye_formuluy_dlya_egye_po_fizike_2015.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000245bb.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x245BB 3556 bytes
font_01_sfnt_off0002533e.bin
dcfeeea65607649fa664c0fb3ef6bf1e1daad8173cd2f35524e8e3e08da50fa7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2533E 14568 bytes
font_02_sfnt_off0002813c.bin
b4ed3c864e749f8c16bc6a59c36f87435b9b86383b256fa7a83a10ffad0e3184		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2813C 14468 bytes
font_03_sfnt_off0002abe9.bin
2827a82cfef3daf616c9cdc3d71e04e848324ef304d16cf4b6b0c595a4f2bb05		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2ABE9 6692 bytes
font_04_sfnt_off0002bf05.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BF05 6084 bytes
font_05_sfnt_off0002ce9a.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CE9A 3752 bytes

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