Malicious PDF — malware analysis report

Static analysis result for SHA-256 5aed2a52669f82c4…

MALICIOUS

PDF

373.0 KB Created: 2015-08-22 10:08:22 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 21c88769d625736982062f30e6780da5 SHA-1: 7a33e776dff54802b91f0e22e893931aea2c7204 SHA-256: 5aed2a52669f82c42470a834be1b6c3c4afa9ef85a0c8e277dc2854729ae7ca9
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains an embedded URL that is flagged as a known malicious redirector. The ML classifier also strongly indicated maliciousness. While no scripts were extracted, the presence of a malicious redirector suggests an attempt to lure the user to a harmful site, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9921

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%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B2%D1%81%D0%B5+%D0%B0%D0%BB%D1%8C%D0%B1%D0%BE%D0%BC%D1%8B+%D1%81%D0%B5%D1%80%D0%B5%D0%B6%D0%B8+%D0%BC%D0%B5%D1%81%D1%82%D0%BD%D0%BE%D0%B3%D0%BE+%D1%87%D0%B5%D1%80%D0%B5%D0%B7+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4674/4674457_otvetuy_na_gia_po_literature_9_klass_2015.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4674/4674782_skachat_gta_vay_siti_multipleer_cherez_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4675/4675121_skachat_govorilku_na_russkom_besplatno_android_skachat.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00058c1c.bin
405f9097b1885a5b23b08997e711a2ed548d5bdc2d1390d885a7c1be3e0ae447		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58C1C 8092 bytes
font_01_sfnt_off0005a3ab.bin
7fea2201c887a4a4a3bfefb19436623bd340c3541dadfd6f21256f772a0df0d9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A3AB 15180 bytes

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