Malicious PDF — malware analysis report

Static analysis result for SHA-256 feefb2493f3524ec…

MALICIOUS

PDF

185.0 KB Created: 2015-08-05 17:01:06 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: f1d6c3b8a9b0aca58b8ca72ea0333928 SHA-1: 4fb4a9e4fb6959720ac9d9345f5102ad97beccfd SHA-256: feefb2493f3524ec6998df525f8aeb2c5054e58f8cdbbd07364a09e4f717e16d
90 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and contains a link to a known malicious redirector. The link `http://botcraftman.ru/?lip&keyword=autostop+26+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE&charset=utf-8` is the primary indicator of malicious intent. This suggests the document is designed to lure users to a compromised site for further malicious actions.

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=autostop+26+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/6//4305/4305839_reshebnik_po_angliyskomu_yazuyku_1011_klass_kuzovlev.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304984_gta_san_andreas_na_android_koduy.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4305/4305001_testuy_po_egye_po_russkomu_yazuyku_11_klass.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a610.bin
eb0d88d0aa20c15905c2e550e43f6fc88cf80aee93550b67fe91df3760ea2335		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A610 6992 bytes
font_00_sfnt_off00023f4a.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23F4A 3556 bytes
font_01_sfnt_off00024ccd.bin
f0f6f44ec7fe037b8716d39b15eb9dd955deb585a533d15df5252254cf456da7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24CCD 14908 bytes
font_02_sfnt_off00027b01.bin
58b00d1ac52ba69e0e97ef59c9e7bb955ed70759acc69614f5a2f04cd00c2e0f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27B01 14576 bytes
font_04_sfnt_off0002ba5c.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BA5C 6084 bytes
font_05_sfnt_off0002c9f1.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C9F1 3752 bytes

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