Malicious PDF — malware analysis report

Static analysis result for SHA-256 3df62b1927a81ca3…

MALICIOUS

PDF

42.2 KB Created: 2020-11-08 07:47:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 0a4908f17ff02a4f36d6d5e0fea40b19 SHA-1: a144d62db85fdb4e8acd65499ed9d87417865aca SHA-256: 3df62b1927a81ca3eb29b125e689fe2f299f6583884b37e7b469c307405c9743
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://traffine.ru/aws?keyword=manually+uninstall+elgato In PDF document text
    • https://laxuruvu.weebly.com/uploads/1/3/1/4/131482832/patav_naximobim_selemarokil.pdfIn PDF document text
    • https://xofadezonav.weebly.com/uploads/1/3/4/6/134643644/7851118.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366014/normal_5fa0251cced6d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366343/normal_5f96c533d23d7.pdfIn PDF document text
    • https://rigitugatelimo.weebly.com/uploads/1/3/4/1/134131632/b12ac7e515e31.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382781/normal_5fa62c7b4b9a7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459027/normal_5fa40153630fc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388432/normal_5f95284bd6d25.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/7775416.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365606/normal_5f907d2d685d6.pdfIn PDF document text
    • https://satobolusiv.weebly.com/uploads/1/3/1/3/131398412/5218725.pdfIn PDF document text
    • https://gasodugolulo.weebly.com/uploads/1/3/4/3/134375537/844d323f6a44bb.pdfIn PDF document text
    • https://vonubaxuted.weebly.com/uploads/1/3/1/4/131452839/rabodogoju.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://fimalul.files.wordpress.com/2020/11/xenikefeg.pdfIn PDF document text
    • https://gobifajoji.files.wordpress.com/2020/11/fobikogugipanesevokopesim.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_off000067f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67F1 4864 bytes
SHA-256: 30d8104de49d6521ee7ebe45ab80ec2f8ce716e46e84ce405bebf3b84d19078a
font_01_sfnt_off000078a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78A7 10364 bytes
SHA-256: c4621e335fd3ce36db3553a45db8eb8494a5dd3ab14bf6b07b1a743450510d54