Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6f409397abc316c…

MALICIOUS

PDF

385.8 KB Created: 2015-08-24 04:05:48 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 63f82499b1e95eeb83bca99af9cd6781 SHA-1: e6e1f6ea10211ebbe91d08165c66a55b98b7167c SHA-256: e6f409397abc316c1fefddcbe4b11bcebd3884f4d1d31fddf066ce98917c51cf
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to known malicious redirector infrastructure, indicating an attempt to lure the user to a harmful site. While no scripts were directly extracted, the PDF structure and the presence of a malicious URL strongly suggest a phishing or redirection attack. The ML classifier also flagged this PDF with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

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=%D0%98%D0%B3%D1%80%D0%B0+%D0%BD%D0%B5%D0%B4%D1%84%D0%BE%D1%80%D1%81%D0%BF%D0%B8%D0%B4+world+%D1%81+%D0%BE%D1%84%D0%B8%D1%86%D0%B8%D0%B0%D0%BB%D1%8C%D0%BD%D0%BE%D0%B3%D0%BE+%D1%81%D0%B0%D0%B9%D1%82%D0%B0&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/6//4693/4693241_denis__bayguzhin__kniga_.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4693/4693053_yeti__yenigye__ryehmyet_.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4699/4699005_skachat_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005bca3.bin
55adde904f33419c10ec85cea3c33ce97f190e2346453ab4dfbdc23e888184b8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BCA3 9212 bytes
font_01_sfnt_off0005d71b.bin
32c83f271bccd5035f2ed1d0af92c4e0f540003946ae3c4f0d9a45b2f5f8aee3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D71B 16024 bytes

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