Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0750092a8afafee…

MALICIOUS

PDF

28.8 KB Created: 2020-06-13 23:18:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-24
MD5: a400ff744a6afe0c93ffd3bef064e958 SHA-1: 231e9c82e90d6df15434b7560381213b174ed765 SHA-256: e0750092a8afafee97e1440f66bfbf5ae84724388c3ef1dd73d979ce9c61ed46
96 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, pointing to various PDF documents hosted on different domains. The ML classifier also flagged this PDF as malicious. The document body contains text fragments and URLs, suggesting a link farm or SEO manipulation tactic. The primary purpose appears to be directing users to a multitude of external resources, potentially for malicious distribution or traffic generation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 4

  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://globalnationalfunding.com/uploads/1/3/0/9/130969411/130969411.html#baby+cache+heritage PDF link annotation
    • http://boldsocial.ca/uploads/1/3/0/2/130272267/7239340.pdfIn PDF document text
    • http://northernoandp.net/uploads/1/3/0/9/130969481/499efeace6a2e60.pdfIn PDF document text
    • http://brokerpartners.co/uploads/1/3/0/7/130740149/gitisone_duxiwuzokikaxi.pdfIn PDF document text
    • http://mta-sts.mx.myfloresflowers.com/uploads/1/3/1/1/131163516/e0d3ba.pdfIn PDF document text
    • http://enelad.co.za/uploads/1/3/0/7/130775276/2161785.pdfIn PDF document text
    • http://businessanalyticsone.com/uploads/1/3/0/3/130323727/2037614.pdfIn PDF document text
    • http://johnreesleather.com/uploads/1/3/0/6/130621903/2985160.pdfIn PDF document text
    • http://warriorshootbanquetfundraiser.com/uploads/1/3/2/3/132302915/7997768.pdfIn PDF document text
    • http://hostmaster.scotlandbywebcam.com/uploads/1/3/0/6/130640236/d7da45bd93dc061.pdfIn PDF document text
    • http://mail.allaboutoilstore.com/uploads/1/3/0/6/130640059/bopomi.pdfIn PDF document text
    • http://sunnyvalespikers.com/uploads/1/3/0/5/130551338/narepiki_foxasojekokabe_fufosokofo.pdfIn PDF document text
    • http://macrotopia.com/uploads/1/3/1/3/131398182/5429502.pdfIn PDF document text
    • http://newearthconnections.com/uploads/1/3/1/4/131407737/1ff5b36.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://kajulak.files.wordpress.com/2020/06/23055491665.pdfIn PDF document text
    • https://nozikop.files.wordpress.com/2020/06/6145994517.pdfIn PDF document text
    • https://xusurubisi.files.wordpress.com/2020/06/55043779588.pdfIn PDF document text
    • https://petogol.files.wordpress.com/2020/06/41614764067.pdfIn PDF document text
    • https://wifuxew.files.wordpress.com/2020/06/77143146618.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004af0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4AF0 8612 bytes
SHA-256: f134d8970aceb40cb1fa1330cbbddd21706e425f85f168a8a516273d34aa94be

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