Malicious PDF — malware analysis report

Static analysis result for SHA-256 a071c79535157947…

MALICIOUS

PDF

360.3 KB Created: 2015-08-28 11:29:50 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 2575725c7d00f4fb23d89d213a01715b SHA-1: c627ec64bfdd342dc28b7249672b6483c3903cca SHA-256: a071c795351579476bfc8f44a7d0c16881ba04f7e7cdb8a544f82d82537a8f90
92 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, botcraftman.ru. This indicates the document is intended to lure the user to a malicious site, likely for phishing or malware delivery. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9961

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%80%D1%83%D1%81%D1%81%D0%BA%D0%B0%D1%8F+%D0%B2%D1%8F%D0%B7%D1%8C+%D1%88%D1%80%D0%B8%D1%84%D1%82&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802364_google__chrome__poslednyaya_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802365_funbox__skachat_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802361_kak__perevesti__pechat_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000554e4.bin
16ff0f0dc6c3a837c1c223fb8d08b964fb4e3f9c68bdf68889687c1b323d0fdf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x554E4 9348 bytes
font_01_sfnt_off00056f44.bin
d251108ff016a95003a6cf277ca6908fadc3e46b96417dcb9ab1690da4c87c1b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56F44 16492 bytes

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