Malicious PDF — malware analysis report

Static analysis result for SHA-256 205263f75799ce93…

MALICIOUS

PDF

46.6 KB Created: 2020-10-12 11:06:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-07-20
MD5: 3d38774d2ec32ab85e361f22cebd5c54 SHA-1: 432591ed714e05bbe50ada047a400ae9c7e961b9 SHA-256: 205263f75799ce9384699287607ce0d1f7d5d2bef328496acc8896ea7e072bce
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=free+spoken+english+books+pdf+download In PDF document text
    • http://files.acomputerconsultant.com/uploads/1/3/1/4/131483343/981835.pdfIn PDF document text
    • http://memisif.inspiredelephant.com/uploads/1/3/0/7/130740199/satuzo-numivepasavinil-pibukorire.pdfIn PDF document text
    • http://migev.indigolightpath.com/uploads/1/3/1/8/131856097/wibajuruk.pdfIn PDF document text
    • http://files.mortgageinsuranceontario.ca/uploads/1/3/1/4/131408970/ea3395081748.pdfIn PDF document text
    • http://kizaf.indigorainstudio.com/uploads/1/3/0/7/130739579/6983533.pdfIn PDF document text
    • https://site-1041865.mozfiles.com/files/1041865/xugiber.pdfIn PDF document text
    • https://site-1038547.mozfiles.com/files/1038547/paxafewudosesavupasib.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000077d2.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000077d2.bin)
    • https://cdn.shopify.com/s/files/1/0434/3880/1061/files/fundamentals_of_statistical_and_thermal_physics_reif_solutions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1544/6423/files/vogaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1479/1069/files/soul_sister_chords_no_capo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d59829b9-49b5-495c-9578-800700b77aa4/36681644619.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 extracted file (font_00_sfnt_off000077d2.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000077d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77D2 5556 bytes
SHA-256: ab088c0e43811be459a9ddaa3fbc32ba5998cf1bccb0ca8b41dec68104de2a88
font_01_sfnt_off00008abc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8ABC 10232 bytes
SHA-256: 066024be4bc74dfe1ff5fd89775d5aa4fb415aa4086deb8c878b1bde16e13f19