Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf5eda96e623267a…

MALICIOUS

PDF

33.6 KB Created: 2020-04-30 15:40:38 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 3a95236bc224b65c560069722c3ccae6 SHA-1: 637ec9bd89e37d0d7466c6faa8d3ba1234744417 SHA-256: cf5eda96e623267a8892a23939ebd4049164b482cd839ffa7ebe224a64817911
62 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which point to domains that appear to be part of a link farm. The heuristic 'PDF_SEO_LINK_FARM' indicates a high volume of generated links, suggesting an attempt to manipulate search engine results or distribute malicious content through a large number of seemingly unrelated documents. One of the embedded URLs, http://ettilaa.com/uploads/1/3/1/8/131872048/131872048.html#aws+cli+aws+cloudformation+delete-+stack, is directly referenced in the document body, further supporting the idea of a lure to external content.

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://ettilaa.com/uploads/1/3/1/8/131872048/131872048.html#aws+cli+aws+cloudformation+delete-+stack
    • http://dcuoblogger.com/uploads/1/3/0/6/130621457/bagamitexigenesegiz.pdf
    • http://gerzonchaves.net/uploads/1/3/0/7/130740169/2381a8a48c58.pdf
    • http://thedasherymen.com/uploads/1/3/0/6/130639566/terimixezi.pdf
    • http://soolproductions.com/uploads/1/3/0/2/130287973/3798845.pdf
    • http://wdtwesterndownstimber.com/uploads/1/3/1/4/131407797/gobuxozifewuponen.pdf
    • http://herkeseegitim.org/uploads/1/3/0/7/130775015/nitizo.pdf
    • http://sipandsigndesign.com/uploads/1/3/1/4/131482953/xusebovojoniz-murenupe-rigovabe.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005d0e.bin
553caba9388487e5567e5866de01fe94446ca8521a6abe7edda44a81eb50276c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D0E 7596 bytes

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