Malicious PDF — malware analysis report

Static analysis result for SHA-256 9bf1e945747e52e6…

MALICIOUS

PDF

34.0 KB Created: 2020-04-30 22:10:04 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: bda23cf13e8cdc75b7e13259f6d9ed3d SHA-1: 023147dacdf28c6addad4e3a99124b82e3e981cd SHA-256: 9bf1e945747e52e696b4bcb8ae41cc67ff671bca4941990c865f0610773cdc59
92 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. The ML classifier also strongly indicated maliciousness. The primary purpose appears to be directing users to a vast array of external websites, likely for SEO manipulation or to serve as a landing page for further malicious activity.

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://ne-surgerycenter.net/uploads/1/3/0/7/130740027/130740027.html#icu+full+form+in+medical
    • http://siefert-personal.de/uploads/1/3/1/4/131406438/jidakadafenilutepol.pdf
    • http://cognatecollective-es.com/uploads/1/3/0/6/130621194/rasedidinojus-nelurenab.pdf
    • http://trackfieldinstitute.com/uploads/1/3/0/6/130620709/pafubawapajijomuka.pdf
    • http://nomi-online.com/uploads/1/3/1/3/131380908/63db9281.pdf
    • http://d2d-prorunners.com/uploads/1/3/0/6/130639240/serizopagububapok.pdf
    • http://dyslexiaalliance.org/uploads/1/3/0/6/130604006/figubizese.pdf
    • http://destinationtrout.com/uploads/1/3/0/2/130287553/fakijekutifi.pdf
    • http://youngeagleentrepreneurs.org/uploads/1/3/1/4/131453022/viboludedimase.pdf
    • http://kimymultiservicios.com/uploads/1/3/0/7/130775279/talob.pdf
    • http://garynolan.ca/uploads/1/3/0/6/130621013/99246d.pdf
    • http://farmhousedecor.org/uploads/1/3/1/4/131437435/tegujolipig-zonawazerodo.pdf
    • http://tudatosszex.hu/uploads/1/3/0/7/130776158/b0e67bc1bd.pdf
    • http://outpostdelivery.com/uploads/1/3/0/3/130312952/2942757.pdf
    • http://oper-schlosshallwyl.ch/uploads/1/3/0/4/130477805/607220.pdf
    • http://colorsofproduce.com/uploads/1/3/1/4/131438483/bixutibetesiki.pdf
    • http://westportanimalhospital.net/uploads/1/3/0/7/130775284/852517.pdf
    • http://callananfitclub.com/uploads/1/3/0/6/130639358/lurubunutuwimirebaru.pdf
    • http://pinecreekinnutah.com/uploads/1/3/0/6/130621473/64996.pdf
    • http://us-restaurant-partners.com/uploads/1/3/0/6/130639091/09072dd8166099.pdf
    • http://harrellsca.org/uploads/1/3/0/7/130739258/jebowejoki.pdf
    • http://thesevenfigureconsultant.net/uploads/1/3/0/7/130775062/5a287f70a7.pdf
    • http://traviswittagency.com/uploads/1/3/1/4/131453100/3440612.pdf
    • http://cheerfundamentals.com/uploads/1/3/1/4/131437834/papox-nizuruv-zoruke.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_off00005e8d.bin
60dbc948915407ca1b2eb29ed9ce7cef928eec928e820718f142d489ab56214c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E8D 7280 bytes

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