Malicious PDF — malware analysis report

Static analysis result for SHA-256 af2ec6a3a0bbcc79…

MALICIOUS

PDF

46.0 KB Created: 2020-10-15 18:17:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-21
MD5: 573f4eedad9b18a4e3c3439a22b8cc03 SHA-1: 237cddff8a74c0d54a38d0e4990fafc68ac255ba SHA-256: af2ec6a3a0bbcc798c0593e2eff53083960cfd0c2eb00d0cb84bede5c377d268
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/123?keyword=italian+cuisine+history+and+culture+pdf In PDF document text
    • https://site-1036993.mozfiles.com/files/1036993/86459535560.pdfIn PDF document text
    • https://site-1041933.mozfiles.com/files/1041933/1897549186.pdfIn PDF document text
    • https://site-1036944.mozfiles.com/files/1036944/21245136138.pdfIn PDF document text
    • https://site-1041412.mozfiles.com/files/1041412/muvepidugudedetuzojig.pdfIn PDF document text
    • https://site-1040399.mozfiles.com/files/1040399/96708572531.pdfIn PDF document text
    • https://site-1038988.mozfiles.com/files/1038988/pazizizugudakuvavuv.pdfIn PDF document text
    • https://site-1043651.mozfiles.com/files/1043651/47561964744.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369657/normal_5f883e2a0dbf8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366654/normal_5f87b8e56fdd7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369665/normal_5f88378e5d902.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365547/normal_5f87130328aef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365598/normal_5f873d2081f9a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365619/normal_5f87585521cf0.pdfIn PDF document text
    • https://site-1039711.mozfiles.com/files/1039711/4395894356.pdfIn PDF document text
    • https://site-1040426.mozfiles.com/files/1040426/66289083392.pdfIn PDF document text
    • https://site-1039811.mozfiles.com/files/1039811/2085729923.pdfIn PDF document text
    • https://site-1036939.mozfiles.com/files/1036939/pukokurorofato.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/1/0484/4784/8602/files/lilevirufidezevuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/1622/3401/files/jenis_alat_kontrasepsi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5706/9736/files/el_rancho_steak_stockton.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_off000075bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75BD 5284 bytes
SHA-256: 210e60d52675320d06cb44e1331aa449b4dd92ae58e8a5dc2d1fe5879227b4fc
font_01_sfnt_off000087a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87A6 10112 bytes
SHA-256: 672108115ce533925a9f48b8fbe7fbdde038f7ded5a8711056341fdf682b5fea