Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b023b621e92864b…

MALICIOUS

PDF

356.4 KB Created: 2015-08-28 11:32:20 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 0ab2f2a53af48bec301bb747a49e740d SHA-1: 727b867c09c5b02614e8a4cf2b55d022b0db867f SHA-256: 7b023b621e92864b4b1444058471e8ea2c18b3e39c706fcef904f81f3e891c32
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document was flagged by a machine learning classifier and contains a link to a known malicious redirector. The embedded URL is likely part of a phishing or malware distribution scheme, aiming to lure the user to a malicious website. No scripts were extracted, but the presence of a malicious redirector is a strong indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9919

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%BD%D0%BF%D0%B8%D0%BD+3152826-10+%D0%BF%D1%80%D0%BE%D1%84%D0%B8%D0%BB%D0%B0%D0%BA%D1%82%D0%B8%D0%BA%D0%B0+%D0%B2%D0%B8%D1%87-%D0%B8%D0%BD%D1%84%D0%B5%D0%BA%D1%86%D0%B8%D0%B8+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802382_russkaya__vyaz_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802373_windows__7__torrent_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802404_skachat__posledniy__patch_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000548e9.bin
596e6fbefacf188c48b9862c2a6a2f447f16b4e90c863f3fbae2997c6446603c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x548E9 8724 bytes
font_01_sfnt_off000562c6.bin
662973ae7f80517fbd3c8f9464dc4ea3c71bc30cddc224a6aeceb258393a0bf5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x562C6 14952 bytes

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