Malicious PDF — malware analysis report

Static analysis result for SHA-256 6af4f8833a7808d6…

MALICIOUS

PDF

373.6 KB Created: 2015-08-27 23:48:17 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 6a8d8893931359428b203d8ac9b2b2bd SHA-1: 0cbe2b1c3433ba75f00bc4132dd3219e5017b692 SHA-256: 6af4f8833a7808d6de38ae3b91ff1144592b14ec49f9ebb51c1a1932adf5cb36
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'http://botcraftman.ru/'. This indicates the document is designed to lure users to a malicious site, likely for further exploitation or malware delivery. The ML classifier and ClamAV detection further support its malicious nature, classifying it as a Pdf.Dropper.Agent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

Heuristics 3

  • 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.
  • ClamAV: Pdf.Dropper.Agent-9144200-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-9144200-0
  • 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%BF%D0%BE+%D1%81%D0%BB%D0%B5%D0%B4%D0%B0%D0%BC+%D0%B1%D1%80%D0%B5%D0%BC%D0%B5%D0%BD%D1%81%D0%BA%D0%B8%D1%85+%D0%BC%D1%83%D0%B7%D1%8B%D0%BA%D0%B0%D0%BD%D1%82%D0%BE%D0%B2+%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://img1.liveinternet.ru/images/attach/c/7//4787/4787946_chto__takoe__tverduye_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4787/4787917_domashnee__zadanie__solfedzhio_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4788/4788078_forza__motorsport__4_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00058c28.bin
be7e6ff5e2311a3e30fe0f25d403bd7c1a7c3774cf5b54a3fd1cc72c32c56520		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58C28 8152 bytes
font_01_sfnt_off0005a3db.bin
c63c6c429c8963a9dac80fa9b32e9a487b78ed16cb6c47cdda8125cb096c1be5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A3DB 16752 bytes

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