Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc4d5f833e9b746c…

MALICIOUS

PDF

186.2 KB Created: 2015-07-24 11:17:47 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: f14bd238643e75f77b2dbd064d30a695 SHA-1: c465dc50711b7596e4366fef2d947b317f76e0de SHA-256: cc4d5f833e9b746c41557a6e8b69945a044a98e1510c2b7fafa5b1b6c3470df7
90 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, indicating a phishing or malware distribution attempt. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the embedded URL is sufficient evidence for a malicious redirect.

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%9A%D0%B0%D0%BA+%D1%83%D0%B1%D1%80%D0%B0%D1%82%D1%8C+%D1%86%D0%B5%D0%BD%D0%B7%D1%83%D1%80%D1%83+%D0%B2+%D0%B8%D0%B3%D1%80%D0%B5+%D1%81%D0%B8%D0%BC%D1%81+3+%D1%81+%D0%BF%D0%BE%D0%BC%D0%BE%D1%89%D1%8C%D1%8E+%D0%BA%D0%BE%D0%B4%D0%BE%D0%B2&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4191/4191259_hristianskie_pesni_skachat_besplatno.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4191/4191105_nokia_n8_proshivka.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4188/4188443_rabochaya_programma_psihologa_dou_v_sootvetstvii_s_fgos.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000244de.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x244DE 3556 bytes
font_01_sfnt_off00025261.bin
7e0e169f8db913e5c2e8f577fb9972626a5ac1f99e12d9d7e6bab5414772dac1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25261 14188 bytes
font_02_sfnt_off00027f0d.bin
26023cb20a8bf79b5922b63bd5add5fd655b2e9b32dff9b36dfbff42d70e3e27		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27F0D 14468 bytes
font_03_sfnt_off0002a9b7.bin
37fe0d4ec15ff89ae4570a5b08ebbcaa1b9b6a0d9e888da6f14526e9f44bb65e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A9B7 7316 bytes
font_04_sfnt_off0002bef5.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BEF5 6084 bytes
font_05_sfnt_off0002ce8a.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CE8A 3752 bytes

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