Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a876038f27230de…

MALICIOUS

PDF

186.8 KB Created: 2015-07-24 15:17:06 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 2bf4437d6542c1a65b4c7418305fd002 SHA-1: 8e2f510d58678a5ad1f7feee489160990703850c SHA-256: 7a876038f27230deadf3a688d41ecb15f2b0200f697d9a42b5cf52701b636579
92 Risk Score

Malware Insights

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

The PDF file was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The embedded URL points to botcraftman.ru, which is associated with malicious activity. No scripts were extracted, but the presence of a malicious link suggests the PDF is a lure for further malicious actions.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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%97%D0%B0%D0%B4%D0%B0%D1%87%D0%B8+%D0%B8+%D0%BF%D1%80%D0%B8%D0%BC%D0%B5%D1%80%D1%8B+%D0%B4%D0%BB%D1%8F+2+%D0%BA%D0%BB%D0%B0%D1%81%D1%81%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+%D1%80%D0%B0%D1%81%D0%BF%D0%B5%D1%87%D0%B0%D1%82%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//4190/4190733_programmuy_dlya_pereproshivki_android.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4191/4191632_otkruytuyy_urok_po_matematike_v_5_klasse_po_fgos.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4191/4191015_manga_studio_5_skachat_torrent.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002470c.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2470C 3556 bytes
font_01_sfnt_off0002548f.bin
65864806a2ff5380b0a5aaea3916131c66b79b95947a30ef6ce9839bda792c45		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2548F 14880 bytes
font_02_sfnt_off0002825c.bin
a58e5d0b30d5aa34972849b46a18692e3ea413d1f23d32b2ea3d2baf75ae465d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2825C 14720 bytes
font_03_sfnt_off0002adcb.bin
8d20525b2550f009d15e491aba8181178c823f4475ec84ff0fd54b82b46e67e8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2ADCB 6836 bytes
font_04_sfnt_off0002c187.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C187 6084 bytes
font_05_sfnt_off0002d11c.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D11C 3752 bytes

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