Malicious PDF — malware analysis report

Static analysis result for SHA-256 793b20aaf5c585ed…

MALICIOUS

PDF

47.0 KB Created: 2020-10-09 01:29:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-15
MD5: b9daff23343827e69ac12498ea0ab186 SHA-1: 71c6469d38df588697e7a7f8de4de53ea70ea698 SHA-256: 793b20aaf5c585ed9162bc3724800fc5722b759e5896a55f274d694c8f556567
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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 https://cctraff.ru/strik?keyword=la+sintaxis+de+la+imagen+resumen+cap In PDF document text
    • http://files.happybuddha-aruba.com/uploads/1/3/2/6/132683484/3580004.pdfIn PDF document text
    • http://files.bassreevesconference.com/uploads/1/3/1/4/131437376/5670302.pdfIn PDF document text
    • http://files.hlawoffice.com/uploads/1/3/2/3/132303019/7a5ca5343135bd9.pdfIn PDF document text
    • http://files.greatbeginningsdelta.com/uploads/1/3/1/8/131857112/sifofaseweg.pdfIn PDF document text
    • https://site-1042591.mozfiles.com/files/1042591/78182776496.pdfIn PDF document text
    • https://site-1039577.mozfiles.com/files/1039577/59498650980.pdfIn PDF document text
    • http://files.darylgove.com/uploads/1/3/0/7/130775475/3630564.pdfIn PDF document text
    • http://files.betweenheavenandearth.org/uploads/1/3/0/7/130740202/b0f8e4397edc.pdfIn PDF document text
    • http://files.careholisticcenter.com/uploads/1/3/2/7/132741293/9dfec6a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8404/4705/files/zupesedenoriwosur.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007832.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7832 5404 bytes
SHA-256: b0f0c6083329e88eb5e26c890fdaf98c6beb4ba54711cf6f4af9b62e5eddad4a
font_01_sfnt_off00008a86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A86 10772 bytes
SHA-256: 28128ef7a017fcce71d6b947f64614f56443b7a5848cd1fb1c46b85b25a8f1a3