Malicious PDF — malware analysis report

Static analysis result for SHA-256 679f899f6420ef18…

MALICIOUS

PDF

358.4 KB Created: 2015-08-20 07:26:41 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6) First seen: 2020-08-10
MD5: fd8ba5dbb07acf815e4e59ea02308988 SHA-1: db2a5e689526782dc1345ddc15dc373bf5d952fa SHA-256: 679f899f6420ef183fe7d6c3605f7769b36182c0b3c318ec4f5f84d262de3ade
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, botcraftman.ru, which is a strong indicator of malicious intent. The ML classifier also flagged this PDF with high confidence. While no scripts were explicitly extracted, the presence of embedded URLs and the heuristic firings suggest the document is designed to lure users to a malicious site, likely as part of a phishing or malware delivery scheme.

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=adblock+%D0%B4%D0%BB%D1%8F+%D1%8F%D0%BD%D0%B4%D0%B5%D0%BA%D1%81+%D0%B1%D1%80%D0%B0%D1%83%D0%B7%D0%B5%D1%80%D0%B0+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C&charset=utf-8 In PDF document text
    • http://img0.liveinternet.ru/images/attach/c/6//4638/4638914_vitaliy_zuykov_naemnik_ego_velichestva_skachat_fb2.pdfIn PDF document text
    • http://img0.liveinternet.ru/images/attach/c/6//4638/4638876_skachat_koran_na_arabskom_tekst.pdfIn PDF document text
    • http://img0.liveinternet.ru/images/attach/c/6//4638/4638801_simulyator_bmp_2_igra.pdfIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005520e.bin
d0429c246fbbe4a2ee0bbbfaf1952974dc6ca252148bbc3e7e4c4b12dc48c292		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5520E 8856 bytes
font_01_sfnt_off00056b0e.bin
4fc50e0cb5209923a97a6ea0a091a4fe207cb05a52a9441e294f98e68888b04c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56B0E 15068 bytes

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