Malicious PDF — malware analysis report

Static analysis result for SHA-256 58d3857c72df3e2d…

MALICIOUS

PDF

183.9 KB Created: 2015-08-08 09:53:50 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 052ba2bc1b7d5a805e202387525ccaec SHA-1: 50eb581c2795bd0e44fa303719fd4ced5024fe72 SHA-256: 58d3857c72df3e2d63b44346441b4e714e6fd4c0c70098fc4d8fba5c032719ee
90 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing indicating a redirect to known malicious infrastructure. The ML classifier also strongly flagged this file as malicious. The embedded URL 'http://botcraftman.ru/?lip&keyword=spy2wc+%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' is the primary indicator of malicious intent, likely serving as a lure for phishing or malware download. No scripts were extracted, and the document body was not sufficiently readable to infer further 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=spy2wc+%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/6//4383/4383743_egye_po_russkomu_2015_onlayn_s_ballami.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4259/4259725_servera_na_maynkraft_175_s_mini_igrami.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384587_zanyatie_v_mire_skazok_v_starshey_gruppe.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023c69.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23C69 3556 bytes
font_01_sfnt_off000249ec.bin
f8fdf079598fd8d9d1afe35a15d1fe595d7ecb82afb8075c78bbf9396975f9df		 pdf-font-stream PDF embedded font (sfnt) at offset 0x249EC 14428 bytes
font_02_sfnt_off00027745.bin
9c9e9ca15a77a60b5dc91df60bca788f775c4b1496976883d13f3d19fd2bc2b1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27745 14752 bytes
font_03_sfnt_off0002a2d9.bin
2ffb52bf703d90e3b0f935c915398180914ff4d1ec54f80128c2d5a9081f89a2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A2D9 6608 bytes
font_04_sfnt_off0002b5c1.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B5C1 6084 bytes
font_05_sfnt_off0002c556.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C556 3752 bytes

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