Malicious PDF — malware analysis report

Static analysis result for SHA-256 3dde62b498de7078…

MALICIOUS

PDF

366.0 KB Created: 2015-08-19 20:47:50 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6) First seen: 2021-11-02
MD5: 0eb95436e827bab13d53d82208c09672 SHA-1: 8729560ebf886aa3333f7029596f81573fb8003b SHA-256: 3dde62b498de7078e051e426648fadd17cc017a6ce766469fd701d4caa533e56
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains an embedded link that is flagged as a known malicious redirector. The ML classifier also strongly indicated maliciousness. The document body is heavily obfuscated, but the presence of the malicious URL is the primary indicator of compromise. No scripts were extracted, but the link suggests an attempt to lure the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9946

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%87%D0%B8%D1%82%D1%8B+%D0%BD%D0%B0+%D0%B3%D1%82%D0%B0+%D1%81%D0%B0%D0%BD+%D0%B0%D0%BD%D0%B4%D1%80%D0%B5%D0%B0%D1%81+%D0%BD%D0%B0+%D1%80%D1%83%D1%81%D1%81%D0%BA%D0%B8%D0%B5+%D0%BC%D0%B0%D1%88%D0%B8%D0%BD%D1%8B+%D0%B1%D0%B5%D0%B7+%D1%81%D0%BA%D0%B0%D1%87%D0%B8%D0%B2%D0%B0%D0%BD%D0%B8%D1%8F&charset=utf-8 In PDF document text
    • http://img0.liveinternet.ru/images/attach/c/6//4630/4630063_gazovaya_plita_karpatuy_17_instrukciya.pdfIn PDF document text
    • http://img0.liveinternet.ru/images/attach/c/6//4630/4630040_rezultatuy_egye_po_russkomu_yazuyku_2015_ivanovskaya_oblast.pdfIn PDF document text
    • http://img0.liveinternet.ru/images/attach/c/6//4628/4628003_test_drive_unlimited_peregon_mashin_karta.pdfIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00056bcc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x56BCC 8404 bytes
SHA-256: 5b1c71d978efb4ffb4f417741fe773250650429dcb46e2774532081d65db5cfd
font_01_sfnt_off0005843a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5843A 16552 bytes
SHA-256: ee1ae6748cdb8eb3073b65b9b42447be4ecc14e0f2f6df9372c96ffbd92bc3fc

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