Malicious PDF — malware analysis report

Static analysis result for SHA-256 0670222164f1a2af…

MALICIOUS

PDF

339.4 KB Created: 2015-08-22 09:02:46 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 4e02c6ede64390ab0b93007e42f24555 SHA-1: f6beae43289bffc7b81f07845e257e52530a046f SHA-256: 0670222164f1a2af04d441318f541122d6771a43aa033a2ecc6a2962949308c9
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 lead the user to a malicious download site. The ML classifier also flagged the document with high confidence. While no scripts were directly extracted, the presence of embedded URLs and the heuristic firings strongly suggest a malicious intent to redirect the user for further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

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=Swedll32+dll+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4674/4674525_apachiiskyhair_v_1_5_full_skachat.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4674/4674606_prohozhdenie_igruy_lara_dzhons_nasledie_nikoluy_tesluy.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4674/4674468_tatuirovki_v_zone_bikini_foto.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00050153.bin
94be0754dd372a8d617ae5676cc307a29f76327d7e5e86c21006fa64ac340d1a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x50153 8892 bytes
font_01_sfnt_off00051b19.bin
fad6dd6f0c1b53955f8b3bb5e82f594f53d7a262f045b07a91c12d2abe10d7e4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x51B19 17172 bytes

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