Malicious PDF — malware analysis report

Static analysis result for SHA-256 348ebe583a2a3b51…

MALICIOUS

PDF

358.6 KB Created: 2015-08-27 23:41:04 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 22af4443c14f40d288d1712e6abdcc69 SHA-1: e32710440c5d14f869cb7b61f93d489df8427707 SHA-256: 348ebe583a2a3b5188814f282d654a352af9702388ccb219a99e739e78142aa9
92 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and contains a link to a known malicious redirector. The presence of this link suggests the document is designed to lure the user to a malicious website. No scripts were extracted, and the document body was unreadable, limiting further analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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%9C%D1%82%D1%81+970+%D1%80%D0%B0%D0%B7%D0%BB%D0%BE%D1%87%D0%BA%D0%B0+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4787/4787853_skachat__teksturuy__dlya_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4787/4787866_gotovuye__prakticheskie__rabotuy_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4787/4787818_windows__7__ultimate_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005543f.bin
36cdf5cd9027c1f54119b2278fda585f6fe147f31c1950d3a7af064a0689e29b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5543F 7772 bytes
font_01_sfnt_off00056b1c.bin
0d26845a38d85d9f2852e17a882a0775af79702a50a97327b2154e60343d39d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56B1C 15752 bytes

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