Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ff918ab67220f46…

MALICIOUS

PDF

35.9 KB Created: 2020-10-28 11:48:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25
MD5: dd6f1d6a9c7619000ba02e5e4251c413 SHA-1: 914ccb9f9a256997edb1e6a04174ec957d801e07 SHA-256: 1ff918ab67220f46a2b2f05f198741a51fe1e6fa75fc1df675b6dc4c426a9bcc
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/aws?keyword=manual+salt%252Fsand+spreaders In PDF document text
    • https://dejolezeg.weebly.com/uploads/1/3/2/8/132815968/mixabokika-xanadujane.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408478/normal_5f9784f881ddb.pdfIn PDF document text
    • https://luketekovagitor.weebly.com/uploads/1/3/4/2/134236109/zatekafov.pdfIn PDF document text
    • https://buveziketi.weebly.com/uploads/1/3/1/3/131398526/tizezikapifedadixale.pdfIn PDF document text
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/kizerapu.pdfIn PDF document text
    • https://jatorogerujew.weebly.com/uploads/1/3/2/7/132710569/movew.pdfIn PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/1867598.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375891/normal_5f89fd7d24f27.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388283/normal_5f91a4f30b77b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370066/normal_5f8a746b7306d.pdfIn PDF document text
    • https://nopuwilimo.weebly.com/uploads/1/3/4/4/134490360/nerememeforas-zeraf-butalavuxuja.pdfIn PDF document text
    • https://dajexave.weebly.com/uploads/1/3/4/3/134352807/bukogilulefaga-wovakowako-soroxit-fefegutop.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388050/normal_5f907fb40db60.pdfIn PDF document text
    • https://wojowoseda.weebly.com/uploads/1/3/4/2/134266381/zevokebuwubi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/viromibukoleliw/carbon_footprint_download.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/global_business_strategy_asian_perspective.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1360a09b-62be-4c79-91cf-c61f036e7154/basic_concepts_about_islamic_banking_principles_and_operations.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ed1b17ac-2a67-4c8e-b0fa-6fc77284a7df/velluvachi_godaramma_video_song_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/50a2f563-1f06-47d2-862d-21c56d8965ec/84589514827.pdfIn PDF document text
    • https://s3.amazonaws.com/gavexilatuvitaz/85183655087.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5578e5ef-9d3d-4228-9296-ba130fac1804/56161270012.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_off00004f49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F49 4992 bytes
SHA-256: 54d55c2f28f34f23b4a1ab958728a7ceb9ab9d49f02e6cbf7b68e2104f351561
font_01_sfnt_off00006063.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6063 10080 bytes
SHA-256: bc578371162dfeb565b780e7a60a380329a8d8642772297e2a4ba9467249d276

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