Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e51f56c0cf73d2c…

MALICIOUS

PDF

372.2 KB Created: 2015-08-25 23:40:20 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6) First seen: 2021-06-17
MD5: 4577c4045983ffe35b7d7aed0a533a63 SHA-1: b83a113a94d73fd6b24aeb5716a43307f33ccca3 SHA-256: 2e51f56c0cf73d2c8d168e69c5696f6f8d06982d993d4323c81f3200854bd11d
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 strongly flagged this PDF as malicious. No scripts were extracted, but the presence of a malicious URL is sufficient evidence for this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9943

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%A1%D0%B8%D0%BB%D0%BE%D0%B2%D0%BE%D0%B9+%D0%B1%D0%B0%D0%BC%D0%BF%D0%B5%D1%80+%D0%BD%D0%B0+%D1%83%D0%B0%D0%B7+469+%D1%81%D0%B2%D0%BE%D0%B8%D0%BC%D0%B8+%D1%80%D1%83%D0%BA%D0%B0%D0%BC%D0%B8+%D1%87%D0%B5%D1%80%D1%82%D0%B5%D0%B6%D0%B8&charset=utf-8 In PDF document text
    • http://img0.liveinternet.ru/images/attach/c/7//4742/4742452_gde__skachat__chit_.pdfIn PDF document text
    • http://img1.liveinternet.ru/images/attach/c/7//4741/4741464_chertezhi__prihozhih__s_.pdfIn PDF document text
    • http://img1.liveinternet.ru/images/attach/c/7//4741/4741409_dogovor__nayma__zhilogo_.pdfIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005883d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5883D 9340 bytes
SHA-256: 8f5d1d1eb1ac9d0448520feedadc7dc442718b22ccd0531a7335b94920f2c79d
font_01_sfnt_off0005a34f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A34F 14232 bytes
SHA-256: ba32d153e3d1edcd93621f4ccc68c73cabc1d0b44458a092a52f2a3c5fbd4dca