Malicious PDF — malware analysis report

Static analysis result for SHA-256 d816b2cb88680e42…

MALICIOUS

PDF

365.7 KB Created: 2015-08-28 11:34:40 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 0161d70211d1fd3d056fb3097b3d59dd SHA-1: f3244aabc723f9d3a460a12c8adcf601f270290a SHA-256: d816b2cb88680e426fc920fcc2e9cf0a55055e52ef005047d85fc993875f00cd
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 infrastructure, which is designed to trick users into downloading software. The document body, though heavily obfuscated, appears to reference 'Deer hunter 2012' and 'torrent', suggesting a lure for game downloads. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9967

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=deer+hunter+2012+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802362_imperiya__angelov__bernard_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802371_shema__ultrazvukovogo_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802379_skachat__deadpool_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005708b.bin
e60e1ce72bb3e5d13c1891e75aba9d3b22a8560d038e3a671fbbd1152788ec3f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5708B 8324 bytes
font_01_sfnt_off00058747.bin
cf60a69b3c8dc4a5684b1764fedd120c4f624c9648d192f21ae8bc1d3dab716e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58747 15756 bytes

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