Malicious PDF — malware analysis report

Static analysis result for SHA-256 08caeef560899e0b…

MALICIOUS

PDF

366.7 KB Created: 2015-08-24 01:34:41 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6) First seen: 2021-11-20
MD5: 7811609984cf3df3d7f2902cb51c20bb SHA-1: f6638edd43dc850678ee482f54484f0fea8b13c8 SHA-256: 08caeef560899e0b5c7ee3887c70bfc9af5fc01513bb54f3b74e6d6b32a05c4b
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 infrastructure. This suggests the document is designed to lure users to a malicious website, likely for phishing or malware distribution. No scripts were extracted, but the presence of a malicious URL 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=%D0%B0%D0%BB%D0%B5%D0%BA%D1%81%D0%B0%D0%BD%D0%B4%D1%80+%D0%B2%D0%B5%D1%81%D1%82%D0%BE%D0%B2+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82+%D0%B2%D1%81%D0%B5+%D0%B0%D0%BB%D1%8C%D0%B1%D0%BE%D0%BC%D1%8B&charset=utf-8 In PDF document text
    • http://img1.liveinternet.ru/images/attach/c/6//4695/4695064_trete__chelovechestvo__skachat_.pdfIn PDF document text
    • http://img0.liveinternet.ru/images/attach/c/6//4694/4694139_matematika__testuy__6_.pdfIn PDF document text
    • http://img0.liveinternet.ru/images/attach/c/6//4694/4694671_kosuy__po__matematike_.pdfIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00057614.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57614 8060 bytes
SHA-256: f2a2b2bb867a26d2e2627e06c9fe94de91e04b8db3da20b83f6868affcbebf3e
font_01_sfnt_off00058d34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58D34 14832 bytes
SHA-256: dfe5eef1f0f2e349570f638bb33826827c1de6c02330d20dbfbb8d7a22193166

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