Malicious PDF — malware analysis report

Static analysis result for SHA-256 d68dbd3b249d0536…

MALICIOUS

PDF

70.2 KB Created: 2020-10-04 20:04:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d1fce417761df9fc412e46f3309973d7 SHA-1: 7715bf96a6af54987fda1c6c01866a6fd21c2e06 SHA-256: d68dbd3b249d0536a1a8661362de927ea03869bd8e8f9f57633585e039131611
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to known malicious infrastructure, specifically a URL designed to deliver further malicious content. The document body, though heavily obfuscated, contains a reference to the same malicious URL, indicating a clear intent to redirect the user. The ML classifier also strongly flagged this PDF as malicious.

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://gettraff.ru/strik?keyword=estrategias+de+afrontamiento+del+estres+academico+pdf In PDF document text
    • http://posagigi.kathrynamcmahon.com/uploads/1/3/0/7/130775195/6df18279b.pdfIn PDF document text
    • http://files.clarkreeds.com/uploads/1/3/0/9/130969054/vatezajide.pdfIn PDF document text
    • http://files.holyfamilyschoolcharleville.com/uploads/1/3/2/6/132681884/kemera.pdfIn PDF document text
    • https://site-1036656.mozfiles.com/files/1036656/32942732791.pdfIn PDF document text
    • https://site-1036965.mozfiles.com/files/1036965/wajunezisofunifesiber.pdfIn PDF document text
    • https://site-1036779.mozfiles.com/files/1036779/wivorojabipabuximi.pdfIn PDF document text
    • https://site-1037094.mozfiles.com/files/1037094/62077930825.pdfIn PDF document text
    • https://site-1036744.mozfiles.com/files/1036744/lasabiposupexu.pdfIn PDF document text
    • https://site-1039846.mozfiles.com/files/1039846/perotupod.pdfIn PDF document text
    • https://site-1037141.mozfiles.com/files/1037141/94267044162.pdfIn PDF document text
    • https://site-1037091.mozfiles.com/files/1037091/zudave.pdfIn PDF document text
    • https://site-1039489.mozfiles.com/files/1039489/83576450997.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/1/0435/6089/4627/files/oracion_al_santisimo_por_los_hijos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2177/7570/files/jovodupodem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0472/2920/6693/files/lujofijipuxozudabini.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8909/1998/files/sedagupepotu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4121/6917/files/80579731240.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

Related samples 6

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c87a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC87A 5432 bytes
SHA-256: 77ce9651f5c849bb00393889cb1a14cdcdf2a8e17cd2a28e3df7e27675da8630
font_01_sfnt_off0000dae8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAE8 15296 bytes
SHA-256: 67e78b61dcbdd16cd161b048dc418187ff2a12d965e7c6c865d9cbd65204dc9b

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