Malicious PDF — malware analysis report

Static analysis result for SHA-256 c17dc7383dc2e573…

MALICIOUS

PDF

31.6 KB Created: 2020-04-14 11:40:47 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 5c560427b1a411ebfa44ee8ca9a2f0a0 SHA-1: 7f682e091e9a69aa180ebb0a3f0628e4328009c9 SHA-256: c17dc7383dc2e573c33131abde4e6c6ae1d858956a238f9cd8223193e9bdf2cf
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, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various domains. The document body text, though heavily obfuscated, contains a reference to 'No kidding crossword answer' and the authoring application 'wkhtmltopdf', suggesting a lure to disguise the malicious nature of the links. The primary intent appears to be SEO spam or directing users to potentially malicious content through a link farm.

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://homegrownhippiewholesale.com/uploads/1/3/0/2/130291492/130291492.html#no+kidding+crossword+answer
    • http://binathebeanbag.com/uploads/1/3/0/4/130476200/woxipadebegojotu.pdf
    • http://voicewithval.com/uploads/1/3/0/5/130539758/duzixonubetixezulat.pdf
    • http://mainstreetartcenter.net/uploads/1/3/1/4/131438562/1495244.pdf
    • http://onelastthingg.com/uploads/1/3/1/3/131380208/789bff.pdf
    • http://link2yoo.net/uploads/1/3/0/6/130603946/dd55c77d5eb734.pdf
    • http://dekaoliveoil.com/uploads/1/3/0/9/130969718/ca6990f5c2398.pdf
    • http://pes-tex.com/uploads/1/3/1/0/131070539/38e50.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_off000054cd.bin
60c378f2e65effac5145925466d7f1a8c6e501caa719961d5e1415c408a4512f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54CD 7660 bytes

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