Malicious PDF — malware analysis report

Static analysis result for SHA-256 29c88cf8fcc43f73…

MALICIOUS

PDF

38.4 KB Created: 2020-10-05 16:00:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-18
MD5: 08e78b69017de1c88de236b3198e18ff SHA-1: 88943007ebc3573d66d2500357c0432e12befacb SHA-256: 29c88cf8fcc43f7311c229f8da7c70b253ba044801930c3afa769e4a4bcc7172
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://ggtraff.ru/strik?keyword=isaac+physics+answers In PDF document text
    • http://files.penandnapkin.org/uploads/1/3/1/8/131857305/futabufizinivobame.pdfIn PDF document text
    • http://files.agsandproducts.com/uploads/1/3/1/8/131872055/nanifisazutekozu.pdfIn PDF document text
    • http://files.indianausbr35.com/uploads/1/3/0/8/130873783/jemiropazevu.pdfIn PDF document text
    • http://tasib.balannz.com/uploads/1/3/1/1/131163914/9804929.pdfIn PDF document text
    • http://files.norwichopenchristmas.org.uk/uploads/1/3/1/3/131380930/02dc8c.pdfIn PDF document text
    • http://files.elisemitchellcoaching.com/uploads/1/3/0/7/130776046/9e726e9c2d4.pdfIn PDF document text
    • http://files.nartica.org/uploads/1/3/1/4/131482991/1cf920d08e.pdfIn PDF document text
    • http://latuze.thecityoflife.com/uploads/1/3/1/4/131483167/gifurugerakesaz_litisomejaw.pdfIn PDF document text
    • http://files.greatertampabaylimo.com/uploads/1/3/0/8/130814288/lesezexeb_wifeserokamix_vekujasamigisav.pdfIn PDF document text
    • http://files.familylawyerminnesota.com/uploads/1/3/1/6/131607712/jubigi_vomikewupinoz.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000059db.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000059db.bin)
    • https://uploads.strikinglycdn.com/files/0f8e2bbf-ada7-44d0-8577-273f8209d0df/87765346530.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a86c91ff-72e7-4ba1-9c2d-992cc9f34a62/mowasowedupuv.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_off000059db.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000059db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59DB 5120 bytes
SHA-256: e4373efd430b4518e5db43b5a1a483876ac125a3b20479623fe58c85f298997d
font_01_sfnt_off00006b58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B58 9968 bytes
SHA-256: e91af25c09b45b4ef95924717c7f0edd34d400fb2e143a479575845c4a0caaba