Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5b2616ab1e529f1…

MALICIOUS

PDF

189.0 KB Created: 2015-08-05 13:59:51 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: c2bcebe2e6b4da6b0a67ecc3d138029c SHA-1: fd0ecc733385785848a4a5bbf4a4423764ca73c0 SHA-256: f5b2616ab1e529f12b527ca03734fd4aa0fc5b906ece5a289b071cb3c2bbc9be
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 a malicious link is sufficient to indicate a likely phishing or malware delivery attempt.

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%82%D0%B5%D1%85%D0%BD%D0%BE%D0%BB%D0%BE%D0%B3%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B0%D1%8F+%D1%81%D1%85%D0%B5%D0%BC%D0%B0+%D0%BF%D1%80%D0%BE%D0%B8%D0%B7%D0%B2%D0%BE%D0%B4%D1%81%D1%82%D0%B2%D0%B0+%D1%81%D0%B0%D1%85%D0%B0%D1%80%D0%B0&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304603_microsoft_project_2010_skachat_besplatno.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304471_3d_home_architect_design_suite_deluxe_8_skachat_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304587_kryak_na_football_manager_2015.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00025020.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25020 3556 bytes
font_01_sfnt_off00025da3.bin
120d4fa226642313d9b980208a478af5407e685927fb8d77ff4bd53a82d304d0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25DA3 15044 bytes
font_02_sfnt_off00028b99.bin
858de1ea0edee6589051d6c5805376be02fce034b392ea3476abe13984ffa707		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28B99 14532 bytes
font_03_sfnt_off0002b686.bin
6efca790ee733cc8708199e304ec8e6956724641e9b7af4791651fb3ed52ea47		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B686 6856 bytes
font_04_sfnt_off0002ca53.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CA53 6084 bytes
font_05_sfnt_off0002d9e8.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D9E8 3752 bytes

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