Malicious PDF — malware analysis report

Static analysis result for SHA-256 8276b52f1b739fee…

MALICIOUS

PDF

361.1 KB Created: 2015-08-29 12:15:11 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6) First seen: 2021-07-07
MD5: 5bfd3e4c2da009e1627fa34d01a42f4d SHA-1: 82312b300b53bcd021cf57ddddf7d6cc3d9c0b3f SHA-256: 8276b52f1b739fee79cb8014c9c92798607326783fb85dbc18b8a0ee07f3a935
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 flagged this PDF with high confidence. Although no scripts were explicitly extracted, the presence of a malicious URL strongly suggests a phishing or redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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%BA%D0%BE%D1%80%D0%BE%D0%BB%D0%B5%D0%B2%D1%81%D1%82%D0%B2%D0%BE+%D0%B2%D0%B5%D1%82%D1%80%D0%BE%D0%B2+%D1%81%D0%BC%D0%BE%D1%82%D1%80%D0%B5%D1%82%D1%8C+%D0%BE%D0%BD%D0%BB%D0%B0%D0%B9%D0%BD+%D0%BD%D0%B0+%D1%80%D1%83%D1%81%D1%81%D0%BA%D0%BE%D0%BC+%D1%8F%D0%B7%D1%8B%D0%BA%D0%B5&charset=utf-8 In PDF document text
    • http://img1.liveinternet.ru/images/attach/c/7//4831/4831059_skachat__besplatno__programmu_.pdfIn PDF document text
    • http://img1.liveinternet.ru/images/attach/c/7//4831/4831305_samsung__recovery__solution_.pdfIn PDF document text
    • http://img0.liveinternet.ru/images/attach/c/7//4830/4830935_model__vertushka__konspekt_.pdfIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00055a1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x55A1D 8500 bytes
SHA-256: bcfc640be0c18f857d36002b44bc8d1d0e1cf3ba974b28aa207b111043a43909
font_01_sfnt_off00057250.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57250 16524 bytes
SHA-256: b7db4c22cbcab72e371920e0ca7010aefa82ab767002ac0bdb6d05ff23c58238

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