Malicious PDF — malware analysis report

Static analysis result for SHA-256 4673f17be1e49867…

MALICIOUS

PDF

352.5 KB Created: 2015-08-29 11:36:06 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6) First seen: 2021-07-07
MD5: 3a311350ed82c94df0828ff43765222e SHA-1: ccc00bb8abbec63b1d1af7800d086700b0b7e84d SHA-256: 4673f17be1e49867aa5e650909959fad357e60befd3f8c38ff1e8bcccc007ca6
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 extracted, the presence of a malicious URL and the PDF structure itself suggest a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

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%BF%D1%80%D0%BE%D0%B3%D1%80%D0%B0%D0%BC%D0%BC%D0%B0+%D0%B4%D0%BB%D1%8F+%D1%82%D0%BE%D1%80%D0%B3%D0%BE%D0%B2%D0%BB%D0%B8&charset=utf-8 In PDF document text
    • http://img0.liveinternet.ru/images/attach/c/7//4830/4830611_kalendarno__tematicheskoe__planirovanie_.pdfIn PDF document text
    • http://img1.liveinternet.ru/images/attach/c/7//4829/4829901_ezel__na_.pdfIn PDF document text
    • http://img0.liveinternet.ru/images/attach/c/7//4830/4830183_bitboks__skachat_.pdfIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00053ec8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53EC8 7992 bytes
SHA-256: 1ae97b06090b3f1b63ebc8c941bea97778975ed3653bfe53baecf8930705433b
font_01_sfnt_off000555c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x555C5 14356 bytes
SHA-256: 9aaed3af12e719967240a48900bcb04fd629bc58f4c50517704d2a58072cb30e

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