Malicious PDF — malware analysis report

Static analysis result for SHA-256 aefc46995cb2e6ba…

MALICIOUS

PDF

43.1 KB Created: 2020-11-09 11:19:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: f8b8ddf77be6a53030c9f01681a5a248 SHA-1: 2e77316a6d99ee2d1bd870bcc7c8230b71abbaa4 SHA-256: aefc46995cb2e6bafc4e964a1f7dc1247e36f50c0fbaca0d97e274d0d5642689
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://traffking.ru/aws?keyword=scioly+2020+rule+book In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365642/normal_5f875ffc0a8db.pdfIn PDF document text
    • https://miwilokak.weebly.com/uploads/1/3/4/3/134375457/fuzumujo.pdfIn PDF document text
    • https://lofofofudu.weebly.com/uploads/1/3/4/6/134621951/6370208.pdfIn PDF document text
    • https://jenititufevi.weebly.com/uploads/1/3/4/5/134595561/tuvet.pdfIn PDF document text
    • https://veraweno.weebly.com/uploads/1/3/0/7/130739577/8263546.pdfIn PDF document text
    • https://saxexowiki.weebly.com/uploads/1/3/0/9/130969873/vusaxud.pdfIn PDF document text
    • https://subarijarasojud.weebly.com/uploads/1/3/4/3/134332778/7d30441.pdfIn PDF document text
    • https://detosujedeke.weebly.com/uploads/1/3/4/3/134371576/gufuberesepita.pdfIn PDF document text
    • https://melegejisud.weebly.com/uploads/1/3/1/3/131379421/xukerare-pipalupakegoju.pdfIn PDF document text
    • https://buximinolid.weebly.com/uploads/1/3/1/3/131381316/a825bd53.pdfIn PDF document text
    • https://pinoxelu.weebly.com/uploads/1/3/4/1/134108818/8690565.pdfIn PDF document text
    • https://gepobuxew.weebly.com/uploads/1/3/1/0/131070920/zetepad.pdfIn PDF document text
    • https://xezinazilasiza.weebly.com/uploads/1/3/4/3/134319357/1329119.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/bewibiwat/vogelamabagexa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6862a499-7279-4f24-8105-26f8d64af1b7/87744955611.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_off00006a8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A8C 5088 bytes
SHA-256: fae3643492a207bfed00fb6c1110d00cfd12c035bba05e8dd7bb6f9e872dd65f
font_01_sfnt_off00007c00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C00 10588 bytes
SHA-256: 6ec30ba1d228c4308e990477895b80575a3019044fb20519febc7fcc80b0f5d9