Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2b01da9aa138d9a…

MALICIOUS

PDF

186.2 KB Created: 2015-08-08 09:59:51 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: a0e37c5590497a9ac92921db4d5945d9 SHA-1: f73ebbc40d640b62bb692736618023bfa4cabdbb SHA-256: a2b01da9aa138d9a3f5abdac7434c19674416aea50aaaf72dd87eead319baf80
90 Risk Score

Malware Insights

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

The PDF contains an embedded link to a known malicious redirector. The ML classifier also flagged this PDF with high confidence. The primary attack vector appears to be luring the user to the malicious URL, which is likely to host a phishing page or distribute further malware. 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=%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0+%D0%BF%D0%BB%D0%B0%D0%BD%D0%B8%D1%80%D0%BE%D0%B2%D0%B0%D0%BD%D0%B8%D1%8F+%D1%82%D1%80%D1%83%D0%B4%D0%B0+%D0%B2%D0%BE+2+%D0%BC%D0%BB%D0%B0%D0%B4%D1%88%D0%B5%D0%B9+%D0%B3%D1%80%D1%83%D0%BF%D0%BF%D0%B5&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384639_mass_effect_3_moduy_na_vneshnost.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383981_skachat_chituy_dlya_css_v80.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384543_vcherashniy_boy_na_kanale_rossiya_2_v_2100.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000244e9.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x244E9 3556 bytes
font_01_sfnt_off0002526c.bin
c9f248175710abe92e99796230727d31abcda3a6e90c2d7abe2a7d62d7845b2b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2526C 14796 bytes
font_02_sfnt_off00028058.bin
2060a63d94e2339a6a913b53633fe040dd147acbd4b88c03beabf0697338579a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28058 14520 bytes
font_03_sfnt_off0002ab27.bin
ab14d9299f9a6d65c6614fb261e2dd35b98901685342662a0ab809a442972c7b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AB27 6904 bytes
font_04_sfnt_off0002bf0e.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BF0E 6084 bytes
font_05_sfnt_off0002cea3.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CEA3 3752 bytes

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