Malicious PDF — malware analysis report

Static analysis result for SHA-256 db6fe0550568b313…

MALICIOUS

PDF

351.0 KB Created: 2015-08-25 09:16:26 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: aaecd931d0c172f2a30b85bb2ae048e6 SHA-1: 22bcc0af80ce7cab028ce8bb4f0d35222856ce71 SHA-256: db6fe0550568b3132ae5bc2f117643293596c38b948fa65f98f29c8bd67564de
90 Risk Score

Malware Insights

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

The PDF document was flagged by a machine learning classifier and contains a link to a known malicious redirector infrastructure. The embedded URL `http://botcraftman.ru/` is highly suspicious and likely serves as a lure to a malicious site. 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=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%BC%D0%B8%D1%80%D0%BE%D1%80%D1%81+%D1%8D%D0%B9%D0%B4%D0%B6&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/6//4725/4725238_obrazec__prikaza__ob_.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4725/4725757_skachat__igru__stalker_.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4725/4725282_egye__po__himii_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00053bc4.bin
f97e07cb44c61dc3b89697b652598118308bce0009f6b6a2d10f4907fdf6e09a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53BC4 8232 bytes
font_01_sfnt_off0005537e.bin
64382b078ab4a333942270fdc3369c3b68a704cfb487a2c3aadea1f17e896820		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5537E 12852 bytes

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