Malicious PDF — malware analysis report

Static analysis result for SHA-256 04cd3ac684dd41f9…

MALICIOUS

PDF

353.6 KB Created: 2015-08-28 18:37:31 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: ff73dde95298416009f967930ce13411 SHA-1: 3824c30169219784a11c21910a6adf99daabcde0 SHA-256: 04cd3ac684dd41f9895bafd124608d232f91c2e30febc3ba10d15bc6ba472e08
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing indicating a malicious redirector link to botcraftman.ru. While no scripts were extracted, the presence of this malicious URL strongly suggests an attempt to lure the user to a compromised site. The ML classifier also flagged this PDF with high confidence.

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=%D1%81%D0%B0%D0%B9%D1%82%D1%8B+%D0%BD%D0%B0+drupal+%D0%BF%D1%80%D0%B8%D0%BC%D0%B5%D1%80%D1%8B&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4810/4810043_route__66__maps_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4809/4809145_ay__karli__ya_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4809/4809761_samodelnuyy__gusenichnuyy__kak_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00054184.bin
6fdb28a57bef3c9692e174c9c2c06c7567a6adcb965e3d5f2037d5ce8a06a9aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54184 7648 bytes
font_01_sfnt_off0005566d.bin
9d892c4c3aca81f0fc3170105d2b9c7c725f6c69e1ad1607ec2f9cca18ad3cc0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5566D 15872 bytes

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