Malicious PDF — malware analysis report

Static analysis result for SHA-256 74eccbd1af3df4d3…

MALICIOUS

PDF

364.7 KB Created: 2015-08-25 15:36:17 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6) First seen: 2021-10-26
MD5: dd0d9532baf57fd7c89eb7870aedf276 SHA-1: c85d50745c03b067456fab761003a582808b6aae SHA-256: 74eccbd1af3df4d3e1842c4b9389a8cdb26ccfffcf7f15cf8d850e8c98339d84
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to known malicious redirector infrastructure, indicating an attempt to lure the user to a harmful site. The ML classifier also flagged this PDF with high confidence. While no scripts were directly extracted, the presence of embedded URLs and the nature of the heuristic firings suggest a phishing or redirection attempt, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

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%BC%D0%B0%D0%BB%D0%BE%D0%BB%D0%B5%D1%82%D0%BA%D0%B0+%D1%80%D0%B0%D0%B7%D0%B4%D0%B5%D0%BB%D0%B0%D1%81%D1%8C+%D1%87%D1%82%D0%BE%D0%B1+%D0%BF%D0%BE%D0%BF%D0%B0%D1%81%D1%82%D1%8C+%D0%B2+%D0%BA%D0%BB%D1%83%D0%B1&charset=utf-8 In PDF document text
    • http://img0.liveinternet.ru/images/attach/c/7//4732/4732445_vk__locker_.pdfIn PDF document text
    • http://img1.liveinternet.ru/images/attach/c/7//4731/4731999_skachat__fotoinstrument__besplatno_.pdfIn PDF document text
    • http://img1.liveinternet.ru/images/attach/c/7//4731/4731390_programmuy__v_.pdfIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00056d55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x56D55 8192 bytes
SHA-256: f3ac8c31d40a671fcc116403bf53be9736ae5019234b5aa71d7eef455431d6e0
font_01_sfnt_off000584f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x584F2 14948 bytes
SHA-256: 5fbea22befb7877692ebc6bb7a166b026625d4fecd6e6b430d682cb29b21e5d4

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