Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c1aa00072f401ad…

MALICIOUS

PDF

188.6 KB Created: 2015-07-24 23:37:57 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: c70c53a36cf0ec02148e6bdc080248ab SHA-1: 136fcada5a76ddfcb461035f9522c38aab8e43f9 SHA-256: 2c1aa00072f401adf8796851e7b9ef6ae8fa7cba71a4997d767dd3d34f27340c
90 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector infrastructure, indicating an attempt to lure the user to a harmful site. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the embedded URL is sufficient evidence for the attack pattern.

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%B8%D1%82%D0%BE%D0%B3%D0%BE%D0%B2%D0%B0%D1%8F+%D0%BA%D0%BE%D0%BD%D1%82%D1%80%D0%BE%D0%BB%D1%8C%D0%BD%D0%B0%D1%8F+%D1%80%D0%B0%D0%B1%D0%BE%D1%82%D0%B0+%D0%BF%D0%BE+%D0%B8%D1%81%D1%82%D0%BE%D1%80%D0%B8%D0%B8+8+%D0%BA%D0%BB%D0%B0%D1%81%D1%81+%D1%81+%D0%BE%D1%82%D0%B2%D0%B5%D1%82%D0%B0%D0%BC%D0%B8+2015&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4190/4190927_skachat_igru_geroi_5_povelitel_orduy_cherez_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4195/4195879_kak_pisat_referat_obrazec_soderzhanie.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4188/4188649_koduy_dlya_igr_alavar.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024c5a.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24C5A 3556 bytes
font_01_sfnt_off000259dd.bin
1dcfa85bf40d7018eeeef4acb3c7f5bf65c39a9ac712aee69c1ba2d8d1753acd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x259DD 14836 bytes
font_02_sfnt_off0002885c.bin
9509d5e4f137dec9e96cd9ab1829396d1166087617e2801f6ac091d54ea8a4bb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2885C 14640 bytes
font_03_sfnt_off0002b393.bin
3648a93cd9aa09d1bc6ad43e7c24a9c19d2c8022a55b3303cdd70fa10b6d3fff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B393 7248 bytes
font_04_sfnt_off0002c8ba.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C8BA 6084 bytes
font_05_sfnt_off0002d84f.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D84F 3752 bytes

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