Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e761aeba6401623…

MALICIOUS

PDF

186.6 KB Created: 2015-07-24 20:23:00 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 2cff487442896ae35327bd887f58b844 SHA-1: dc0a799f43067f22c951fc7016a04e8174b71552 SHA-256: 3e761aeba640162301d83f56d5f5f256330cb5f21e8bf58ab46b5076a003d8bd
90 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing indicating a redirect to known malicious infrastructure. The ML classifier also strongly flagged this file as malicious. The primary IOC is the embedded URL, which is likely used to lure the user to a site for further exploitation or credential harvesting. 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=%D0%BF%D0%BE%D1%81%D0%BC%D0%BE%D1%82%D1%80%D0%B5%D1%82%D1%8C+%D1%80%D0%B5%D0%B7%D1%83%D0%BB%D1%8C%D1%82%D0%B0%D1%82%D1%8B+%D0%B3%D0%B8%D0%B0+%D0%BF%D0%BE+%D0%BC%D0%B0%D1%82%D0%B5%D0%BC%D0%B0%D1%82%D0%B8%D0%BA%D0%B5+2015+9+%D0%BA%D0%BB%D0%B0%D1%81%D1%81&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4191/4191424_vas_ozhidaet_grazhdanka_nikanorova_skachat_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4192/4192371_skachat_the_escapists_0796.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4188/4188416_shablonuy_landing_page_skachat_besplatno.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000244e3.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x244E3 3556 bytes
font_01_sfnt_off00025266.bin
e1627c1553e8a4a0310df9212331a76d804a1c8257cc1b1456460f7c2549c445		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25266 15040 bytes
font_02_sfnt_off000280b2.bin
67f75648739881d40a45a83dc21fd2f9ee976e80cb58257164cfc1b98958fe7d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x280B2 14640 bytes
font_03_sfnt_off0002abe4.bin
c6c4969e38a53cc3da9f4b7f58913d71c9b868a01597fa594302ee32f554280a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2ABE4 7036 bytes
font_04_sfnt_off0002c070.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C070 6084 bytes
font_05_sfnt_off0002d005.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D005 3752 bytes

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