Malicious PDF — malware analysis report

Static analysis result for SHA-256 1618ee7a1ce6c6b6…

MALICIOUS

PDF

344.3 KB Created: 2015-08-24 01:24:34 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6) First seen: 2021-11-02
MD5: e99e1a705b9ec2c1b1f979c0bac052b2 SHA-1: d337b5ac9b35650291413aa9281a5eaeb3818cba SHA-256: 1618ee7a1ce6c6b6aff669cd5b90938a23ffc0f309c2953af710ccd9eeb491fd
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains an embedded link to a known malicious redirector URL, indicating an attempt to lure the user to a harmful site. The ML classifier also flagged the document with high confidence. While no scripts were explicitly extracted, the PDF structure and the malicious link 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%92%D0%B8%D0%B4%D0%B5%D0%BE%D0%BC%D0%BE%D0%BD%D1%82%D0%B0%D0%B6+%D0%B4%D0%BB%D1%8F+%D0%B0%D0%BD%D0%B4%D1%80%D0%BE%D0%B8%D0%B4+422&charset=utf-8 In PDF document text
    • http://img0.liveinternet.ru/images/attach/c/6//4694/4694734_pdd__igra__simulyator_.pdfIn PDF document text
    • http://img1.liveinternet.ru/images/attach/c/6//4693/4693990_detskaya__zheleznaya__doroga_.pdfIn PDF document text
    • http://img1.liveinternet.ru/images/attach/c/6//4693/4693098_zhurnal__registracii__platezhnuyh_.pdfIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00051e1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x51E1F 8556 bytes
SHA-256: bd227d3b1b20a2fc1f6ef7c5f24bf0f51bf767a1a39228310b17c60b04d7491d
font_01_sfnt_off0005377e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5377E 13200 bytes
SHA-256: 5d47a91448ca80206ddbce8e2a2e218f8c75b05155ed6b9f138829b7da1346ae