Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3a5eb7b6abe9e2e…

MALICIOUS

PDF

42.9 KB Created: 2020-04-06 15:24:12 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 8dab9be49d5c9bf59a89d91a7d532780 SHA-1: 9962a02bc9c1736698fb3be489c32bc1b48d411d SHA-256: c3a5eb7b6abe9e2e5174d558a0b688a69e2dc15bf24a42cd252ebfdabe439680
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious File

The PDF file contains a large number of external links to other PDF files hosted on various domains, indicative of a link farm or SEO spam campaign. The primary heuristic 'PDF_SEO_LINK_FARM' strongly suggests this malicious intent. The embedded URLs point to these external PDF files, which are likely designed to host further malicious content or redirect users to phishing sites.

Heuristics 3

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://lovebiginspires.com/uploads/1/3/0/7/130776326/130776326.html#palabras+que+se+escriben+con+las+letras+virtual
    • http://euro-tres.com/uploads/1/3/0/7/130776698/9e22436.pdf
    • http://oaklandcommunitycouncil.org/uploads/1/3/0/5/130543141/silakafibatol.pdf
    • http://witterpc.com/uploads/1/3/0/9/130968917/zirowukok.pdf
    • http://swyt.us/uploads/1/3/0/5/130541065/9773097.pdf
    • http://stevensplumbingllc.com/uploads/1/3/0/7/130739553/d2eae6f4.pdf
    • http://sixty5north.com/uploads/1/3/1/0/131069898/dabb74a2fa.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000064b3.bin
3aa4c8f8a3f8f2c9a805a1168cf790097d4964fabbfe847d536315244ad5a2e6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64B3 9872 bytes
font_01_sfnt_off00008831.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8831 16036 bytes

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