Malicious PDF — malware analysis report

Static analysis result for SHA-256 e77ea43880318317…

MALICIOUS

PDF

184.9 KB Created: 2015-08-08 09:37:45 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: f171314e2961bb22ace8bbaeea3d9f3f SHA-1: 66a9a490b4cbea111d56d68e7f751c8097eb3293 SHA-256: e77ea438803183175041f61f67fdcbcd7faf6c9b32a5deb91f3bd77ed0cde731
90 Risk Score

Malware Insights

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

The PDF contains an embedded link to a known malicious redirector. The ML classifier also flagged this PDF with high confidence. The primary malicious IOC is the redirector URL, which is likely used to deliver a secondary payload or phish for credentials. 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=canon+i-sensys+mf3010+%D0%B4%D1%80%D0%B0%D0%B9%D0%B2%D0%B5%D1%80%D0%B0+%D0%BD%D0%B0+windows+7+64&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384064_windows_81_skachat.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383842_zhestuy_sudi_po_futbolu_kartinki.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383732_delfinariy_na_russkom_ostrove.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a363.bin
cfc1a1d85fc5e76552fe8adefe461eeb1b4bae45acfc264e290242a62aa04b22		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A363 7588 bytes
font_00_sfnt_off00023c6e.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23C6E 3556 bytes
font_01_sfnt_off000249f1.bin
c1bfedfb8be4c19049f492784164063ea3af83b1c390b663d8e815a399796d70		 pdf-font-stream PDF embedded font (sfnt) at offset 0x249F1 14460 bytes
font_02_sfnt_off00027766.bin
da4e99f4d4ef9f9f54639498f4c2f144ed4544fcbfc78e4c05375a2b0eedb508		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27766 15064 bytes
font_04_sfnt_off0002b9d1.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B9D1 6084 bytes
font_05_sfnt_off0002c966.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C966 3752 bytes

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