Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6052af0cba6c706…

MALICIOUS

PDF

344.6 KB Created: 2015-08-27 10:07:45 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 07f54e010ea00dcf9317f38c8be3e230 SHA-1: 52c62d0846a43df28527d6c3f980e96f9c1b8f11 SHA-256: c6052af0cba6c706ae6aa030d78e0958a55ff941d413b733442d06c062c644f0
90 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, http://botcraftman.ru/. This heuristic firing, combined with the ML classifier's high confidence, indicates the document's primary purpose is to lead the user to a harmful site. No scripts were extracted, but the embedded URL is sufficient evidence for this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9963

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=octodad+deadliest+catch+%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://img1.liveinternet.ru/images/attach/c/7//4771/4771907_igruy__ot__lesson_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4772/4772086_instrukciya__oral_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4771/4771924_shema__podklyucheniya__sony_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00051871.bin
7290fed6119573dd33e12f395a640c8f1f267961d1245fead6af933dd242ba5d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x51871 9528 bytes
font_01_sfnt_off0005324e.bin
d08b6d259c42ddc86074c7bda76c8dddb8d8ff4474146080ae1b169f397f5926		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5324E 16568 bytes

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