Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ac31518546af4d4…

MALICIOUS

PDF

359.9 KB Created: 2015-08-29 11:35:31 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6) First seen: 2021-07-07
MD5: e977a1b77d6bb25a5478f247b2e140fb SHA-1: f9b58f7da39127915358f3297f08c03237fb536e SHA-256: 6ac31518546af4d48b27f8e1ed7ab334f81e7cbf426d4744fc14a85b90784481
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. Although no scripts were extracted, the presence of a malicious URL is sufficient evidence of a malicious intent, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B4%D0%BB%D1%8F+%D0%B0%D0%BD%D0%B4%D1%80%D0%BE%D0%B8%D0%B4%D0%B0+%D1%84%D0%BE%D1%82%D0%BE+%D0%B2+%D1%81%D0%B5%D0%B9%D1%84&charset=utf-8 In PDF document text
    • http://img0.liveinternet.ru/images/attach/c/7//4830/4830558_kak__narisovat__krasivo_.pdfIn PDF document text
    • http://img0.liveinternet.ru/images/attach/c/7//4830/4830102_shanson__2012__skachat_.pdfIn PDF document text
    • http://img0.liveinternet.ru/images/attach/c/7//4830/4830367_prilozhenie__dlya__otladki_.pdfIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00055d5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x55D5C 8056 bytes
SHA-256: 2a645f6fd7293b9d33b7ebb3ea36b064d7a3971addc46db26bcb462fe757ff91
font_01_sfnt_off000574b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x574B0 13580 bytes
SHA-256: 3939466edd755f3158b56f8723ae7830eac591b76257cae41f758eadee423289

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