Malicious PDF — malware analysis report

Static analysis result for SHA-256 7067b98aab814f9a…

MALICIOUS

PDF

187.8 KB Created: 2015-07-27 18:28:20 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 796b836da71713e7e4332b66a705a1ec SHA-1: e3e61c7ecb1469651892979e3dcf226a7a94df38 SHA-256: 7067b98aab814f9a00fd0ef5c88931bded839fc2857eea5c31f448198df8e700
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The embedded URL is the primary indicator of malicious intent, likely serving as a lure to a phishing or malware distribution site.

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%B4%D1%80%D0%B0%D0%B9%D0%B2%D0%B5%D1%80%D0%B0+%D0%B4%D0%BB%D1%8F+windows+7+%D0%BC%D0%B0%D0%BA%D1%81%D0%B8%D0%BC%D0%B0%D0%BB%D1%8C%D0%BD%D0%B0%D1%8F+64+bit+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4225/4225825_iptv_pleylist_dlya_vzrosluyh.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4229/4229574_kak_uznat_rezultatuy_egye_po_literature_2015.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4223/4223344_skachat_counterstrike_global_offensive.pdf
    • http://www.microsoft.com/typography/fonts/You
    • http://www.microsoft.com/typography/fonts/

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002aea5.bin
f3d9683733793cf2e2e85b953a2ed652a5fd4f6f89d2c56fb5cf8d32892c54d3		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2AEA5 7712 bytes
font_00_sfnt_off000246fc.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x246FC 3556 bytes
font_01_sfnt_off0002547f.bin
aca763a42dac3813e1c0935eae9640ba836bbb4fbabd00f859a2236575ec8210		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2547F 14900 bytes
font_02_sfnt_off000282c1.bin
4fbc6d7f7d0e6db2d040078494197082acd1b727835ba1d51361b25529435b2e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x282C1 14828 bytes
font_04_sfnt_off0002c570.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C570 6084 bytes
font_05_sfnt_off0002d505.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D505 3752 bytes

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