Malicious PDF — malware analysis report

Static analysis result for SHA-256 a87493aaf118afdd…

MALICIOUS

PDF

352.6 KB Created: 2015-08-26 09:48:26 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 036acc4a23af8bd0ad8ab7af6de5d8ef SHA-1: 2727dd50241dee88a92b2f1fdc6591d83ea46737 SHA-256: a87493aaf118afdd33f7f1851be81ba3b3d803e4d123b51922c4e9588e65288e
90 Risk Score

Malware Insights

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

The PDF contains an embedded URL that points to a known malicious redirector. The document body, though heavily obfuscated, contains keywords related to downloading software cracks for Windows 7, suggesting a social engineering lure. The ML classifier also flagged this PDF with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9968

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=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+crack+%D0%B4%D0%BB%D1%8F+windows+7&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4751/4751775_skachat__besplatno__programmu_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4751/4751716_skachat__igruy__dlya_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4751/4751750_skachat__kartinki__shevrole_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00053f2f.bin
7e5b62fdb8ccf1afe457127358d268af3181937bd09e27ae30aa83da863ddeae
pdf-font-stream PDF embedded font (sfnt) at offset 0x53F2F 8172 bytes
font_01_sfnt_off0005562d.bin
e18087e80de2f1f7e600cf085d33cc0cc6398c65f03bf388a1e05206985f9718
pdf-font-stream PDF embedded font (sfnt) at offset 0x5562D 14680 bytes