Malicious PDF — malware analysis report

Static analysis result for SHA-256 969891b69eafdc21…

MALICIOUS

PDF

189.2 KB Created: 2015-07-25 00:08:27 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: c2b2334d8b9cde6fbfb653c692da387b SHA-1: ddfda53e6b956785d7173199808adb103449e913 SHA-256: 969891b69eafdc21f1194bb298971675f95e4800e1af7f32e4fdf8671723a885
90 Risk Score

Malware Insights

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

The PDF file was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also assigned a high probability of maliciousness. The embedded URL points to botcraftman.ru, which is identified as a malicious redirector. No scripts were extracted, and the document body was truncated, limiting further analysis of the exact lure. The primary attack vector appears to be a malicious link within the PDF.

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=%D1%87%D0%B0%D1%80%D0%BB%D1%8C%D0%B7+%D0%B4%D0%B8%D0%BA%D0%BA%D0%B5%D0%BD%D1%81+%D0%B1%D0%BE%D0%BB%D1%8C%D1%88%D0%B8%D0%B5+%D0%BD%D0%B0%D0%B4%D0%B5%D0%B6%D0%B4%D1%8B+%D0%B0%D1%83%D0%B4%D0%B8%D0%BE%D0%BA%D0%BD%D0%B8%D0%B3%D0%B0+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184829_mersibo_igruy_skachat_besplatno.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4189/4189244_gia_po_russkomu_yazuyku_9_klassa.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4192/4192797_grand_theft_auto_v_skachat_torrent_na_pc_2015.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024e38.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24E38 3556 bytes
font_01_sfnt_off00025bbb.bin
64a941cfe94beef6e9bfc782ff962be2cd3fdb096605cfd000a947688bd5d142		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25BBB 15400 bytes
font_02_sfnt_off00028b33.bin
9fb36bed1b5232018d99761ca27e19d3d0da16f3ba5425b572221e739a48f7eb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28B33 14636 bytes
font_03_sfnt_off0002b665.bin
9a7582ca87494c3fae042a55a88c7a86d0a775cd32425f4727770abe51df5f10		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B665 7092 bytes
font_04_sfnt_off0002caf6.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CAF6 6084 bytes
font_05_sfnt_off0002da8b.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2DA8B 3752 bytes

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