Malicious PDF — malware analysis report

Static analysis result for SHA-256 529a35ceb3dcc026…

MALICIOUS

PDF

29.6 KB Created: 2020-05-21 01:28:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-15
MD5: 768070b5c4dc640bbaa3376d4dd67665 SHA-1: 0467ab257229e085c71ef546e872b4242914ac21 SHA-256: 529a35ceb3dcc026cf3f8130189b6e96c0adad9d9de5e214a28ec1290d765462
96 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF file contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various domains. These links are likely intended to manipulate search engine results or lead users to malicious content. No scripts were extracted from this sample, limiting the ability to determine specific payload delivery mechanisms.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

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://growingpages.com/uploads/1/3/0/9/130969046/130969046.html#gipsy+jazz+pdf PDF link annotation
    • http://toddlersword.com/uploads/1/3/0/7/130738801/6792387.pdfIn PDF document text
    • http://inlifesciencesrealestate.com/uploads/1/3/0/4/130490774/nededalipaju.pdfIn PDF document text
    • http://2777ontario.com/uploads/1/3/0/4/130435881/917576.pdfIn PDF document text
    • http://mysignsplus.com/uploads/1/3/1/4/131482996/7688192.pdfIn PDF document text
    • http://robledobg.com/uploads/1/3/1/4/131411857/fe93df.pdfIn PDF document text
    • http://ouidutch.com/uploads/1/3/1/4/131454255/zizamige.pdfIn PDF document text
    • http://sunsetsailkeywest.net/uploads/1/3/0/7/130740433/rapodatoxakowe.pdfIn PDF document text
    • http://janetsbook.com/uploads/1/3/1/4/131409546/rifedodageget_mewimabaker_lurowad_vuxawojirukuxuz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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 1

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_off0000498c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x498C 10092 bytes
SHA-256: 2dd2426a04fc5504416b208a9e28d4f29f115eef003c4c5d9b7fe103061608fd

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