Malicious PDF — malware analysis report

Static analysis result for SHA-256 5485844da5fc87ba…

MALICIOUS

PDF

44.2 KB Created: 2020-11-06 16:46:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 2971ee617a70ae1fe3eb626c6e4c3d61 SHA-1: 57e4fdee48d0ed3ebbf4b35311499ffab0d4ab46 SHA-256: 5485844da5fc87baae2ca2242f4976a3a61aa95c405684958a51ec76155d4cb1
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://traffset.ru/aws?keyword=tara+campbell+mayor+age PDF link annotation
    • https://vibebivenef.weebly.com/uploads/1/3/1/4/131412032/zewija.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366057/normal_5f8ba90316e68.pdfIn PDF document text
    • https://xibogunef.weebly.com/uploads/1/3/1/3/131398295/jijeri.pdfIn PDF document text
    • https://bilewazivabo.weebly.com/uploads/1/3/2/8/132816117/gevoworurivexavu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380219/normal_5f91068975621.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416139/normal_5fa08aeabb23c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413374/normal_5fa3007a84b03.pdfIn PDF document text
    • https://josadezabo.weebly.com/uploads/1/3/4/4/134490641/8893225.pdfIn PDF document text
    • https://wekubuzebebam.weebly.com/uploads/1/3/0/7/130739705/3112005.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365608/normal_5f8968e10fdee.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://rakidate.files.wordpress.com/2020/11/71629890515.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/052183c5-0147-4f4d-a724-8c858d760d81/efeito_doppler_exercicios_resolvidos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba39634f-ec41-4d57-b7e1-2bb3bdceace0/63243809542.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cbdc4c7a-f158-436d-9a94-1ee93afec18f/the_amazing_spider_man_google_docs_mp4.pdfIn PDF document text
    • https://zitoduf.files.wordpress.com/2020/11/ximobijoxifofesava.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_off00006db1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DB1 5264 bytes
SHA-256: 97d2600d43320a92ec36d5ff216d4ed571fcb2899cd945aa9590122829b371b8
font_01_sfnt_off00007f8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F8D 10688 bytes
SHA-256: e2533049e5d435125adcdb1c0a1545c864cf21f6ca0583959476ac77a2591feb