Malicious PDF — malware analysis report

Static analysis result for SHA-256 54ffe3393e143803…

MALICIOUS

PDF

364.6 KB Created: 2015-08-29 11:06:34 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6) First seen: 2021-09-29
MD5: d4dbbd1b8e02ab036e488e88964ca667 SHA-1: 36a4716e07f3ddaf4cbc4f1ee20dd75a525aa718 SHA-256: 54ffe3393e14380306502fb8847be0e65edae60fb13683070b23f6d80f7242a1
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector infrastructure, indicating a malicious intent to lure the user to a harmful site. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the embedded URL is sufficient evidence of a malicious redirection 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=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%82%D0%B5%D0%BA%D1%81%D1%82%D1%8B+%D0%B4%D0%BB%D1%8F+%D1%87%D1%82%D0%B5%D0%BD%D0%B8%D1%8F+%D0%BF%D0%B5%D1%80%D0%B2%D0%BE%D0%BA%D0%BB%D0%B0%D1%81%D1%81%D0%BD%D0%B8%D0%BA%D0%BE%D0%B2&charset=utf-8 In PDF document text
    • http://img1.liveinternet.ru/images/attach/c/7//4829/4829945_dark__stories__bloody_.pdfIn PDF document text
    • http://img1.liveinternet.ru/images/attach/c/7//4829/4829941_windows__xp__sp3_.pdfIn PDF document text
    • http://img1.liveinternet.ru/images/attach/c/7//4829/4829919_vhodnoy__monitoring__9_.pdfIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00056a9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x56A9D 7940 bytes
SHA-256: 9a1c2c476525d706a34acad9d1b71d0de192fe1a346ccce93729ff88b5ec7748
font_01_sfnt_off000581a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x581A1 16468 bytes
SHA-256: 64ab8b5a5edf8815e248bdffa0b7357bcd603a63bbb19d652ebda3fc034011d5

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