Malicious PDF — malware analysis report

Static analysis result for SHA-256 b919eac5c24818e4…

MALICIOUS

PDF

186.4 KB Created: 2015-07-25 16:13:39 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 0a61c3c24dedb351116e63fb30441dde SHA-1: 5e1c7c032f91b8e1615c1007b04991d54855e6a9 SHA-256: b919eac5c24818e4078f02fcc432714fd1baddfedaae92fc2582c0a5415b2974
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 strongly indicated maliciousness. The embedded URL points to botcraftman.ru, which is identified as a malicious redirector. No scripts were extracted, but the presence of this malicious link suggests the document is designed to lure the user to a harmful destination.

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%B8%D0%B3%D1%80%D0%B0%D1%82%D1%8C+%D0%BE%D0%BD%D0%BB%D0%B0%D0%B9%D0%BD+%D0%B2+%D0%B3%D1%82%D0%B0+5+%D1%81+%D1%80%D0%B5%D0%B3%D0%B8%D1%81%D1%82%D1%80%D0%B0%D1%86%D0%B8%D0%B5%D0%B9+%D0%B1%D0%B5%D0%B7+%D1%81%D0%BC%D1%81&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4196/4196950_sony_vegas_pro_13_skachat_torrent_na_russkom_32_bit.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4203/4203934_crack_dlya_quick_sales_free_2.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185419_stalker_zona_porazheniya_2_otvetnuyy_udar_skachat_torrent.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002451f.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2451F 3556 bytes
font_01_sfnt_off000252a2.bin
cc30679f3c43fa0ab7c8fe5a178dc642c5266fd2448612696ef6807c64b5b446		 pdf-font-stream PDF embedded font (sfnt) at offset 0x252A2 15032 bytes
font_02_sfnt_off00028129.bin
5d0869bbb262944525d3a1bfc61cc3a8fb93918f90c46ac4365b2e298fc58e32		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28129 14640 bytes
font_03_sfnt_off0002ac5d.bin
a54034bc51a76476f60bd7ed1319af65394fedadb29cfbeeebbb77a87d716659		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AC5D 6820 bytes
font_04_sfnt_off0002bff7.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BFF7 6084 bytes
font_05_sfnt_off0002cf8c.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CF8C 3752 bytes

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