Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d8511ee25730e63…

MALICIOUS

PDF

45.8 KB Created: 2020-10-25 22:32:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-18
MD5: 26ed08767e9c8e19c42af60db9295ff7 SHA-1: ffafc7e69c302b1e79fc87494c3a58de41c48b00 SHA-256: 5d8511ee25730e637331e98f2477f37d9fa31cd1ccded5bd6a0c34087ba5c9ae
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=johns+hopkins+internal+medicine+board+review+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365555/normal_5f93bc4a141e3.pdfIn PDF document text
    • https://xavoxoxuda.weebly.com/uploads/1/3/1/3/131379246/3635439.pdfIn PDF document text
    • https://waxalema.weebly.com/uploads/1/3/4/3/134364729/dudetegisexoxedami.pdfIn PDF document text
    • https://dutedurelixuvu.weebly.com/uploads/1/3/4/3/134320021/f2f3886.pdfIn PDF document text
    • https://xotiroxo.weebly.com/uploads/1/3/0/7/130776105/jazozogifitumu.pdfIn PDF document text
    • https://ruwopevod.weebly.com/uploads/1/3/1/3/131397973/tovos.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366057/normal_5f8e8f91e54b1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370063/normal_5f8e694042c98.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366973/normal_5f8b1e8144fb2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369647/normal_5f95dd7342e0b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369914/normal_5f94e70cb160b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/fa9a0eed-3b2b-4fcc-8f7a-bbc9c4471201/nuneba.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/984e4009-7900-47cf-9640-14b51e46209c/wedefuvoxazugunepolewaki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5b12d465-e73e-4163-a34e-a6fc45ee750a/27878504062.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9beb5e52-bf53-4351-b390-d38dda055a74/xoxisagofusizugobidum.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/jozugiw.pdfIn PDF document text
    • https://s3.amazonaws.com/babuxufarizuxur/adverbs_of_manner_rules.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/kexivowavewiwufisanulid.pdfIn PDF document text
    • https://s3.amazonaws.com/salade/pubaxatofobame.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/biotecnologia_industrial_volume_2_schmidell.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5b8760fa-f47d-4962-b0be-c609aa1d11f2/the_bonfire_forsaken_lands_wiki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/100031b7-491a-4487-8872-7dc1949f35a8/42715176800.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ccbc6366-bdda-4b3f-b9a3-6c6cfc2d8268/39496822668.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/39c2c5dc-e2aa-4985-a3dd-cb6deeaf75da/acting_lessons_game_free.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000654e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x654E 5528 bytes
SHA-256: 95c117d5cb8eec67ba85fb80e0773fa9db1a0b288963592b6483d9da88c3e151
font_01_sfnt_off000077ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77EA 10476 bytes
SHA-256: 166a23cd40bbca521a0a3ba09d72d0fd23c7950daa78f185fdb0120f52ef0577
font_02_sfnt_off00009af9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9AF9 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333