Malicious PDF — malware analysis report

Static analysis result for SHA-256 ccbfc3fa0b526f9e…

MALICIOUS

PDF

187.2 KB Created: 2015-07-24 21:01:22 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: c20cf7cba4a3b6546304718e0a788536 SHA-1: d1fe9c528aeef05121d81974e7bd761a9d762ce0 SHA-256: ccbfc3fa0b526f9eaca724b7159eab93eb9872aeb6b749878a2cbfe4bd39274e
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 infrastructure. The ML classifier also flagged this PDF with high confidence. The primary attack vector appears to be directing the user to a malicious site via the embedded URL.

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%88%D1%8D%D1%80%D0%BE%D0%BD+%D0%BC%D0%B5%D0%BB%D1%8C%D0%BD%D0%B8%D0%BA+%D1%81%D1%82%D1%80%D0%B5%D1%81%D1%81%D0%BE%D1%83%D1%81%D1%82%D0%BE%D0%B9%D1%87%D0%B8%D0%B2%D0%BE%D1%81%D1%82%D1%8C+%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://img0.liveinternet.ru/images/attach/c/5//4192/4192602_egye_po_russkomu_yazuyku_2015_testuy_onlayn.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4192/4192418_igra_dalnoboyschiki_1_skachat_besplatno_cherez_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4194/4194277_rezultatuy_gia_po_matematike_2015_tyumenskaya_oblast.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000247c3.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x247C3 3556 bytes
font_01_sfnt_off00025546.bin
01293b5ee3decf9a3764fbd1d6e436e7eece9a44c364f59bf5855d967f134191		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25546 15112 bytes
font_02_sfnt_off000284b3.bin
df73161318799a433c3cfdf57a09b40a7aeecb5c275e0574bb6f85716d05b63c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x284B3 14520 bytes
font_03_sfnt_off0002af8f.bin
719a321deee3eef3f9457c0c110bcdba2aa4ac3ec8b26f41d0607fa95f31ac9a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AF8F 6728 bytes
font_04_sfnt_off0002c2dd.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C2DD 6084 bytes
font_05_sfnt_off0002d272.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D272 3752 bytes

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