Malicious PDF — malware analysis report

Static analysis result for SHA-256 043167c6e8a7ab12…

MALICIOUS

PDF

184.7 KB Created: 2015-08-08 09:36:20 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 28b0cccf63af63bade13ec40d4df0951 SHA-1: bf6867193f31d7b028ec2f60f917c51c4958000b SHA-256: 043167c6e8a7ab12c40d7a574a08ab1213df6949c9ed10d8c3c80559d64534aa
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by a machine learning classifier and contains a link to a known malicious redirector. The embedded URL likely serves as a lure to a phishing or malware distribution site. No scripts were extracted, but the presence of a malicious redirector suggests an attempt to deliver a secondary payload or phish for credentials.

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%A7%D0%B8%D1%82+%D0%BD%D0%B0+%D0%BA%D0%BE%D0%BD%D1%82%D1%80%D0%B0+%D1%81%D0%B8%D1%82%D0%B8+%D0%B4%D0%B5%D0%BD%D1%8C%D0%B3%D0%B8&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384069_reshebnik_po_algebre_8_klassa_merzlyak.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384053_disbat_na_russkom_ostrove.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383935_kak_chitat_natalnuyu_kartu.pdf
    • http://www.microsoft.com/typography/fonts/
    • http://www.microsoft.com/typography/fonts/You

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000241a8.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x241A8 3556 bytes
font_01_sfnt_off00024f2b.bin
f6c570c56159b3722e2e3c8232294009e7804d275b55fc3c90fc71d6f4dbce20		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24F2B 14352 bytes
font_02_sfnt_off00027c7a.bin
971c53d0a811faa959b8e1956257577f9e2fbaf43c25165a594517346b84c1e4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27C7A 14580 bytes
font_03_sfnt_off0002a785.bin
9fe976dd92c4bbafacec971574113a959175c85a3c9079f662c979d08bbb3229		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A785 6240 bytes
font_04_sfnt_off0002b915.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B915 6084 bytes
font_05_sfnt_off0002c8aa.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C8AA 3752 bytes

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