Malicious PDF — malware analysis report

Static analysis result for SHA-256 4782fdcbdad2a4b3…

MALICIOUS

PDF

51.4 KB Created: 2020-10-05 19:59:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-20
MD5: 8ff0e6f0292694d0474c3ffd2e424681 SHA-1: fa26c53000ace5da89e1c57629d8a06fd35b73a6 SHA-256: 4782fdcbdad2a4b3627bbc2228345eebc8e77e4454b10e21c4f78544c1cf50af
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=android+studio+emulator+is+slow In PDF document text
    • https://site-1037069.mozfiles.com/files/1037069/xopovozodizovav.pdfIn PDF document text
    • https://site-1038520.mozfiles.com/files/1038520/14610402472.pdfIn PDF document text
    • http://files.lcdsandrine.com/uploads/1/3/1/8/131871692/7174659.pdfIn PDF document text
    • http://files.seedlingscorp.org/uploads/1/3/1/4/131437064/7756570.pdfIn PDF document text
    • https://site-1040208.mozfiles.com/files/1040208/lanatixiz.pdfIn PDF document text
    • https://site-1040575.mozfiles.com/files/1040575/79416334670.pdfIn PDF document text
    • https://site-1040341.mozfiles.com/files/1040341/sabaz.pdfIn PDF document text
    • https://site-1039215.mozfiles.com/files/1039215/gejifureniwuvaloma.pdfIn PDF document text
    • https://site-1036627.mozfiles.com/files/1036627/sanoputemu.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/1/0434/1415/9521/files/logitech_x_540_to_tv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/5338/3581/files/plaza_house_furniture_showroom_of_bloomsburg_bloomsburg_pa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/5889/2452/files/87795580865.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_off000088d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88D1 5052 bytes
SHA-256: d2c2edcbb41fa9d72ff34f6522996dddd6534c4516b607e6185808694dca43cd
font_01_sfnt_off000099f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x99F6 11960 bytes
SHA-256: 8e817882d9f867343fd1c28a50f350d93d825be163525150de722dddabd5393b