Malicious PDF — malware analysis report

Static analysis result for SHA-256 571bfcbda0f413cb…

MALICIOUS

PDF

188.0 KB Created: 2015-07-25 05:13:58 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: e0ebea82fd64e3e1af608601e67483bd SHA-1: 8968cae73f97d92e4a031443beccd63dc60349d2 SHA-256: 571bfcbda0f413cb6cd7b1be962f9e5b85b2bb704e9a6032ff00152d860c2b48
92 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing indicating a link to known malicious redirector infrastructure. The ML classifier also strongly flagged this PDF as malicious. The embedded URL, http://botcraftman.ru/..., is the primary indicator of malicious intent, likely serving as a lure to a phishing or malware distribution site. No scripts were extracted from this sample.

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%A1%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%81%D0%B5%D0%BA%D1%80%D0%B5%D1%82%D1%8B+%D0%BE%D0%B1%D0%BE%D0%BB%D1%8C%D1%89%D0%B5%D0%BD%D0%B8%D1%8F+1000+%D1%81%D0%B5%D0%BA%D1%80%D0%B5%D1%82%D0%BE%D0%B2+%D0%BA%D0%BB%D0%B5%D0%BE%D0%BF%D0%B0%D1%82%D1%80%D1%8B&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4195/4195894_vstrecha_moloduyh_s_karavaem_slova_roditeley.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4198/4198161_uchebnik_alekseeva_yashina_metodika_razvitiya_rechi.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4191/4191672_icloud_dlya_windows_xp.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024a46.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24A46 3556 bytes
font_01_sfnt_off000257c9.bin
29287b0271cb07b0a7d145344c00750c8f182e36139165353017372bdbc7e898		 pdf-font-stream PDF embedded font (sfnt) at offset 0x257C9 15120 bytes
font_02_sfnt_off000286e3.bin
38289d23cad9be3616ee8da6c70791c855e02ac54892d17b3395a9fce63ab9be		 pdf-font-stream PDF embedded font (sfnt) at offset 0x286E3 14468 bytes
font_03_sfnt_off0002b197.bin
6859c559983b231b8dc4daf816418a51d24ca824b2d840f4a2c315af8aa29868		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B197 7080 bytes
font_04_sfnt_off0002c61c.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C61C 6084 bytes
font_05_sfnt_off0002d5b1.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D5B1 3752 bytes

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