Malicious PDF — malware analysis report

Static analysis result for SHA-256 37525e4a6186759a…

MALICIOUS

PDF

37.9 KB Created: 2020-04-06 09:10:37 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2021-02-23
MD5: 735dee6adfbceff3c72115626f543421 SHA-1: 5b1ea801411d7c44be1c2e0baebdf8974ba18652 SHA-256: 37525e4a6186759a9c20651cfb83814a4e87395b5b4f29bb781bfc9b5101a721
96 Risk Score

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://sustainableracine.com/uploads/1/3/0/2/130270986/130270986.html#como+hacer+una+mesa+plegable+de+madera PDF link annotation
    • http://rivetingrozie.com/uploads/1/3/0/4/130483062/7ffbf.pdfIn PDF document text
    • http://worstdayoftheyearrun.com/uploads/1/3/0/4/130483990/puwivotovurudavog.pdfIn PDF document text
    • http://fast4car.com/uploads/1/3/0/3/130323154/lariwu.pdfIn PDF document text
    • http://myrolemodel.info/uploads/1/3/0/9/130969399/965b6.pdfIn PDF document text
    • http://coinoplaundryparts.com/uploads/1/3/1/3/131379394/7b71237b3.pdfIn PDF document text
    • http://cncrs.net/uploads/1/3/0/5/130544090/xovebop.pdfIn PDF document text
    • http://premierlawncaresolutions.com/uploads/1/3/0/6/130639474/voginaxivugoku.pdfIn PDF document text
    • http://designsby-a.com/uploads/1/3/0/8/130874376/02b040fd.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_off00006b9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B9B 8560 bytes
SHA-256: b2480b40ccd69c3e9f9a5dcd9c4d95952265ae746ee8588d03da3943940e8b56

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