Malicious PDF — malware analysis report

Static analysis result for SHA-256 3792a7cdfb985927…

MALICIOUS

PDF

52.8 KB Created: 2020-04-16 20:19:08 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 568501eb2094a78d4583c7a45158baf2 SHA-1: 1af06004a99350d890cf1e46f8929d59a8b26c7c SHA-256: 3792a7cdfb9859276781e2ef96e7a37e9072600717a4b39c4a5344cd7446515a
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, suggesting a link farm or a distribution mechanism for further malicious content. No scripts were extracted from this sample, limiting the ability to determine specific payload delivery or execution methods. The document body is heavily obfuscated and contains only metadata.

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://terminaluno.org/uploads/1/3/1/0/131070452/131070452.html#information+of+paramoecium
    • http://thepearlwithinyou.com/uploads/1/3/0/6/130604287/fixadugajakarijeduxo.pdf
    • http://yogurtinloveclt.com/uploads/1/3/1/3/131379012/4314410.pdf
    • http://uppertownshipnjcom.net/uploads/1/3/0/5/130541641/edf9a55184b92.pdf
    • http://wafflesofwonder.com/uploads/1/3/0/3/130313557/124690.pdf
    • http://josephsgumboday.com/uploads/1/3/0/7/130775714/wulitonolimilibuzas.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_off00009ecd.bin
1cb1385ca265adb6cf0058362cb1c19aa17fbf35b3ac2347804eaddc42201ffc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9ECD 8168 bytes
font_01_sfnt_off0000bdf5.bin
e91619dfd4c72a85464d95ef1ba4e67df13020651c42071bafbe521a61d9f7fc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBDF5 2652 bytes

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