Malicious PDF — malware analysis report

Static analysis result for SHA-256 666bc292097dce31…

MALICIOUS

PDF

185.8 KB Created: 2015-07-27 05:38:54 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 1be5e3a6b80c44a79a3f339f2133aae4 SHA-1: 0643cf17112a52fef99511730d8c2a16f7c3f71b SHA-256: 666bc292097dce31643218a7d73df39dc4df874a28a473c0d07ca186b3fc7a9a
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 download page.

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%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B0%D0%BB%D1%8C%D0%B1%D0%BE%D0%BC+%D0%B4%D0%B7%D0%B4%D0%B7%D1%8C%D0%BE+2013+%D1%87%D0%B5%D1%80%D0%B5%D0%B7+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4200/4200918_skachat_karbalevich_aleksandr_lukashenko_politicheskiy_portret.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4198/4198820_velikolepnuyy_vek_1_sezon_skachat_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4211/4211810_otvetuy_gia_2015_po_matematike_28_maya.pdf
    • http://www.microsoft.com/typography/fonts/
    • http://www.microsoft.com/typography/fonts/You

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002439b.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2439B 3556 bytes
font_01_sfnt_off0002511e.bin
ebd75fd597274a346168537515527c96ca315acab8a628bdd492b48245dc9b59		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2511E 14332 bytes
font_02_sfnt_off00027e47.bin
a6d7f03dcca75f031d406e4653fb96842f5871f13ded31f03e295c1ea7758067		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27E47 14512 bytes
font_03_sfnt_off0002a903.bin
927cdb798ce85f56b9edcac37167fe8be89e2f15b7386cffe97424372f9ea301		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A903 6968 bytes
font_04_sfnt_off0002bd50.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BD50 6084 bytes
font_05_sfnt_off0002cce5.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CCE5 3752 bytes

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