Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf2e8b49cab2bdf2…

MALICIOUS

PDF

335.9 KB Created: 2015-08-20 07:26:25 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: c0eb8169d32bd9833e0beedad98674f1 SHA-1: 67c9a399e54f0743906bcd8fe88fef4fde4334ed SHA-256: bf2e8b49cab2bdf2d3d7e71add66049a27b49faa378eb5ebc972f7c4b7dc0472
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, indicating an attempt to lure the user to a harmful site. The ML classifier also flagged this PDF with high confidence. No scripts were extracted, but the presence of a malicious URL is sufficient to infer the attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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=Hd+vdeck+%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://img0.liveinternet.ru/images/attach/c/6//4638/4638817_spisok_bankov_uzbekistana_po_mfo.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4638/4638832_wikimapia_interaktivnaya_karta_mira_skachat_besplatno.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4638/4638799_1s_8x_unipatch_exe_x64_skachat.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0004f47d.bin
b83fd2741479d03ac3c808d76dc10351eb73eb8afd7ec94a6726f1b98983cc7f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4F47D 7824 bytes
font_01_sfnt_off00050a90.bin
6978cc378d59537cde5e7a2f8e9b502476050a90ea8bf92e63c8dbb082b27264		 pdf-font-stream PDF embedded font (sfnt) at offset 0x50A90 18092 bytes

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