Malicious PDF — malware analysis report

Static analysis result for SHA-256 6dbd98adf76b2227…

MALICIOUS

PDF

387.4 KB Created: 2015-08-22 08:56:23 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 31c7790b1ef2741fe8a350ef2bf92258 SHA-1: 06a5ea9502df31b5ae635aad139346abff137d68 SHA-256: 6dbd98adf76b222746266de9912de438b3062012c0c795649e2130f175fd3aac
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, indicating an attempt to lure the user to a harmful site. The ML classifier also strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of embedded URLs and the redirector heuristic suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9902

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%B2%D1%8B%D0%B9%D1%82%D0%B8+%D0%B8%D0%B7+%D0%B7%D0%BE%D0%BD%D1%8B+%D0%BA%D0%BE%D0%BC%D1%84%D0%BE%D1%80%D1%82%D0%B0+%D0%BA%D0%BD%D0%B8%D0%B3%D0%B0+%D0%B1%D1%80%D0%B0%D0%B9%D0%B0%D0%BD+%D1%82%D1%80%D0%B5%D0%B9%D1%81%D0%B8+%D1%87%D0%B8%D1%82%D0%B0%D1%82%D1%8C+%D0%BE%D0%BD%D0%BB%D0%B0%D0%B9%D0%BD&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4674/4674457_otvetuy_na_gia_po_literature_9_klass_2015.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4674/4674462_tkp_45104372008_skachat.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4674/4674468_tatuirovki_v_zone_bikini_foto.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005c3b8.bin
75b580b17a7a7f501a37596e9b610e76df32df342dde1e49cf36cfa98fac8100		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C3B8 9484 bytes
font_01_sfnt_off0005df1e.bin
e8334c1fa459d9031e1c06205900cc6bf0ecf6171c6817690dc54de1bef65d60		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DF1E 14472 bytes

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