Malicious PDF — malware analysis report

Static analysis result for SHA-256 aebf0b56106e6a93…

MALICIOUS

PDF

350.4 KB Created: 2015-08-24 00:07:51 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: e88986b0a9fe53af6e7e40754f7cc007 SHA-1: fc563073cd2b6f600064c021cdafb1d73c21f548 SHA-256: aebf0b56106e6a93d3a5106bc9c67923cef135b828ebdffb7486f5abc70c4990
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The embedded URL points to botcraftman.ru, which is identified as a malicious redirector. This suggests the document's primary purpose is to lure the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9901

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%A1%D1%85%D0%B5%D0%BC%D0%B0+%D0%B1%D0%BB%D0%BE%D0%BA%D0%B0+%D0%BF%D1%80%D0%B5%D0%B4%D0%BE%D1%85%D1%80%D0%B0%D0%BD%D0%B8%D1%82%D0%B5%D0%BB%D0%B5%D0%B9+%D0%BD%D0%B0+%D1%85%D0%BE%D0%BD%D0%B4%D0%B5+%D0%B0%D0%BA%D0%BA%D0%BE%D1%80%D0%B4+%D1%81%D1%817&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/6//4693/4693313_skachat__vse__pesni_.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4693/4693527_gdz__kalinina__solfedzhio_.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4693/4693364_abbyy__lingvo__12_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00053369.bin
81057b655a761e1e845c0d7209ee1cb5d2cfb5c9ec43dd925493249e7342fd80		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53369 7552 bytes
font_01_sfnt_off0005493a.bin
952e382576a2306aab940b6543c4f685afb84c0fe8cce39a572eaea4190ba96c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5493A 15824 bytes

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