Malicious PDF — malware analysis report

Static analysis result for SHA-256 51f286c8f7feaed4…

MALICIOUS

PDF

40.7 KB Created: 2020-04-26 04:00:01 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2021-02-20
MD5: 5a07a76699f730597a63d107232db868 SHA-1: 144e08e849f1e51fabf0af9b62b3b367f7c663a3 SHA-256: 51f286c8f7feaed49d9ef763e2114bbbb1b7561b3e1131a7f478722e6216ea9e
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://houseforsalellc.com/uploads/1/3/0/9/130969966/130969966.html#broadcast+news+production+pdf PDF link annotation
    • http://cheerlife.shop/uploads/1/3/0/6/130604764/3587516.pdfIn PDF document text
    • http://mayahypnotherapy.com/uploads/1/3/0/5/130552106/4486759.pdfIn PDF document text
    • http://thecorporatecounselor.com/uploads/1/3/0/5/130550683/zitimoniva.pdfIn PDF document text
    • http://thelakesidesun.com/uploads/1/3/0/7/130739652/remav.pdfIn PDF document text
    • http://diversified-resources.org/uploads/1/3/0/5/130588424/e9e3f.pdfIn PDF document text
    • http://domindcom.com/uploads/1/3/1/4/131412955/duwami-merokutexuv.pdfIn PDF document text
    • http://smart-sparks.com/uploads/1/3/0/5/130543280/pobanirevozonasoxe.pdfIn PDF document text
    • http://bleuxxdutchess.com/uploads/1/3/0/4/130435590/9190482.pdfIn PDF document text
    • http://nancyspolishing.com/uploads/1/3/0/6/130621719/73005b27e8b353.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_off00007912.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7912 7744 bytes
SHA-256: 0d534ff2a485498a916c7eda3753a02dcadd8ab593ba24959e6e6f2fb5f3fc72

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