Malicious PDF — malware analysis report

Static analysis result for SHA-256 bcaddd55a9e9e156…

MALICIOUS

PDF

37.0 KB Created: 2020-04-23 08:48:31 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2026-05-09
MD5: f02189fb4f262358bb963817673681ea SHA-1: 8258da3eb21fd6c7c3e7e9bed2a31436d64e207f SHA-256: bcaddd55a9e9e156a14e3fd737bf419cdc398e177acd17eb437f3edbf7741369
96 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious Link

This PDF file was flagged as malicious by an ML classifier. It contains a large number of external links, many pointing to other PDF files on various domains, suggesting a link farm or a distribution mechanism for further malicious content. The presence of the string 'excel vba format date yyyymmdd' in the document body, along with the PDF_SEO_LINK_FARM heuristic, indicates a likely attempt to manipulate search engine results or distribute malicious documents disguised as spreadsheets.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://chichesterfootandankle.org/uploads/1/3/0/3/130313339/130313339.html#excel+vba+format+date+yyyymmdd PDF link annotation
    • http://myfooddam.com/uploads/1/3/0/6/130639315/4b18021cb174.pdfIn PDF document text
    • http://browardcountycriminallaw.com/uploads/1/3/1/3/131398234/30e92e713.pdfIn PDF document text
    • http://proyectagroupbo.com/uploads/1/3/0/6/130639368/5732195.pdfIn PDF document text
    • http://farmsteadandfolly.com/uploads/1/3/1/4/131406807/8e45d3.pdfIn PDF document text
    • http://ightsnaps.com/uploads/1/3/0/6/130604521/nesoxixakafiwat_vilamenudifo.pdfIn PDF document text
    • http://trexconsulting.com/uploads/1/3/0/5/130542907/240c8bde35.pdfIn PDF document text
    • http://adascrafts.com/uploads/1/3/0/2/130270740/paruremo-tatanibezamuk.pdfIn PDF document text
    • http://blognguyen.com/uploads/1/3/0/5/130551832/zunopusulizoge.pdfIn PDF document text
    • http://982ride.com/uploads/1/3/0/6/130639224/xekot_mogokawalu_ruzarewe.pdfIn PDF document text
    • http://xietywtf.net/uploads/1/3/1/3/131379689/5166509.pdfIn PDF document text
    • http://blondeinruins.com/uploads/1/3/0/6/130603785/4035522.pdfIn PDF document text
    • http://heretoprotectyourfamily.com/uploads/1/3/0/5/130589216/2791477.pdfIn PDF document text
    • http://holmes-iplaw.com/uploads/1/3/0/8/130874480/2aa968.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

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000066fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66FE 8564 bytes
SHA-256: 65734653fe99b532499be7494072d58871c3167bf83e52b1b7ddf5c92358c3b2

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