Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a8394918c1c7a99…

MALICIOUS

PDF

368.0 KB Created: 2015-08-29 11:09:11 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6) First seen: 2021-11-25
MD5: 978c132e8ab47cf3c6df5bb687eedda6 SHA-1: 8c7a30f28c61213cf78e0ad2474a2184d8a08623 SHA-256: 5a8394918c1c7a99b5aafa96c72178b5d7c2f900b424e3fe8f60f1a8adc0c7b4
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by a machine learning classifier and contains a link to a known malicious redirector. The presence of this link suggests the document is designed to lure the user to a malicious website, likely for phishing or malware delivery. No scripts were extracted, but the malicious link is a strong indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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%88%D1%83%D0%BA%D1%88%D0%B8%D0%BD+%D0%BA%D0%B0%D0%BB%D0%B8%D0%BD%D0%B0+%D0%BA%D1%80%D0%B0%D1%81%D0%BD%D0%B0%D1%8F+%D0%BA%D1%80%D0%B0%D1%82%D0%BA%D0%BE%D0%B5+%D1%81%D0%BE%D0%B4%D0%B5%D1%80%D0%B6%D0%B0%D0%BD%D0%B8%D0%B5&charset=utf-8 In PDF document text
    • http://img1.liveinternet.ru/images/attach/c/7//4829/4829963_raspisanie__avtobusa__25_.pdfIn PDF document text
    • http://img1.liveinternet.ru/images/attach/c/7//4829/4829826_programma__dlya__sozdaniya_.pdfIn PDF document text
    • http://img1.liveinternet.ru/images/attach/c/7//4829/4829977_umenshenie__iskovuyh__trebovaniy_.pdfIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00057a8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57A8A 8292 bytes
SHA-256: 32c32a0913d82e406f731eb5fefec64c73d7cebfa9f2136fb924b57f094902b9
font_01_sfnt_off00059272.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59272 14508 bytes
SHA-256: ec70951b1efb9bac7c200f14c0d54325855d69c9acc6602faa8925cbc4cfa184

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