Malicious PDF — malware analysis report

Static analysis result for SHA-256 2583b790ad80a1c9…

MALICIOUS

PDF

49.5 KB Created: 2020-09-30 16:49:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-07-12
MD5: 1042685849f342d1b2f4f6531f73c23a SHA-1: 2b5a562ebdbed5c567fd0a4c00891c488d633a76 SHA-256: 2583b790ad80a1c9f594a1cc578d96560685d9a293f9ac1577e0082e1b3efb6d
124 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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 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=intermittent+explosive+disorder+dsm+5+pdf In PDF document text
    • http://files.popcshelp.org/uploads/1/3/2/6/132682862/josaxafuwa-noluzexebifebox-titosifebo-votadulugi.pdfIn PDF document text
    • http://wejozawob.mynaturalplayce.org/uploads/1/3/1/4/131406082/936d6b.pdfIn PDF document text
    • http://files.kirstenmakinson.com/uploads/1/3/1/4/131437867/9177782.pdfIn PDF document text
    • http://suverid.cyclebavaria.com/uploads/1/3/1/4/131438044/87501fa7cd5fe6.pdfIn PDF document text
    • http://zimag.jbhealth.co.uk/uploads/1/3/0/7/130738779/pedegazoluji.pdfIn PDF document text
    • https://site-1037010.mozfiles.com/files/1037010/vinirus.pdfIn PDF document text
    • https://site-1036746.mozfiles.com/files/1036746/nedokenugexirosototik.pdfIn PDF document text
    • https://site-1036667.mozfiles.com/files/1036667/zorobudusirugijufipa.pdfIn PDF document text
    • https://site-1038511.mozfiles.com/files/1038511/wijetugaxupigegore.pdfIn PDF document text
    • https://site-1037189.mozfiles.com/files/1037189/49375769498.pdfIn PDF document text
    • https://site-1037189.mozfiles.com/files/1037189/95698594853.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00007740.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00007740.bin)
    • http://www.daltonmaag.com/In extracted file (font_02_sfnt_off0000ab3c.bin)
    • https://cdn.shopify.com/s/files/1/0429/2152/5407/files/armitron_pro_sport_watch_manual.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_off00007740.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007740.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7740 4956 bytes
SHA-256: 81dac44131b08b0e1e36b644d071b2d30e2bcd64f072b14765502ad1e5915cec
font_01_sfnt_off00008805.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8805 10320 bytes
SHA-256: 29c1e6c6a949dfb65a24197f67f8331000604de614cb993ca9fe8213c267f5df
font_02_sfnt_off0000ab3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAB3C 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361