Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee96cc6a6b1f777e…

MALICIOUS

PDF

37.8 KB Created: 2020-04-01 23:10:30 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: adaa0fe37beffa80c7c3a7d53df23076 SHA-1: 175692402b4efb90f0b3e5b1a65cf567b7146ac0 SHA-256: ee96cc6a6b1f777e50673114a91e42546cfb8d15e821421e0b4547705218af48
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a large number of external links, many of which point to other PDF files on different domains. This behavior is indicative of a link farm designed to increase search engine ranking or distribute malicious content. The ML classifier strongly supports the malicious verdict, and the PDF_SEO_LINK_FARM heuristic confirms the presence of a link farm.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://prizmhaircompany.org/uploads/1/3/0/3/130323556/130323556.html#operaciones+matematicas+sexto+primaria
    • http://cyberloo.com/uploads/1/3/0/4/130436299/jixalikikewaxar.pdf
    • http://pepperchamp.com/uploads/1/3/0/5/130551130/1291425.pdf
    • http://rajaampatdivers.com/uploads/1/3/1/3/131398246/1379946.pdf
    • http://mikeandeli.nyc/uploads/1/3/0/6/130621165/puxizolajod.pdf
    • http://fbcharvard.com/uploads/1/3/0/7/130775768/480245.pdf
    • http://currentgraphicscreative.com/uploads/1/3/0/3/130324292/deguginamesomifabopo.pdf
    • http://adaccongoongasbl.org/uploads/1/3/0/6/130639708/a140291e0.pdf
    • http://bluvudoo.com/uploads/1/3/0/7/130776368/784bf267a22.pdf
    • http://plumasrentals.com/uploads/1/3/0/7/130775735/447192.pdf
    • http://thomasarta.com/uploads/1/3/0/5/130544303/ledudol.pdf
    • http://parkerhandyman.net/uploads/1/3/1/4/131408791/wazabeduz.pdf
    • http://fizzers.net/uploads/1/3/0/7/130738499/muwogi.pdf
    • http://leatherlark.com/uploads/1/3/0/4/130476791/8737094.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_off00006ad4.bin
cdb6b019dfac45d1a7770eeab53fdd61872eff7e76f1d3f5a5286f483c6d052f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AD4 8144 bytes

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