Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ca10aaf37dc841c…

MALICIOUS

PDF

49.4 KB Created: 2020-11-06 22:02:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 68e49c5227a6f8bfee91ab1a575dd34c SHA-1: 744854720f80cd7fcd1a759cc7503022e1aaded0 SHA-256: 9ca10aaf37dc841c6a108610bde0f02fbd1b8151bef85f3273ba9649735f8450
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=athens+al+drive+in+movie In PDF document text
    • https://xogexemufak.weebly.com/uploads/1/3/1/4/131437987/5343726.pdfIn PDF document text
    • https://xazojitov.weebly.com/uploads/1/3/1/4/131408465/301de4db5cf050.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366366/normal_5f875cf5ed0a1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401712/normal_5f92eb15934db.pdfIn PDF document text
    • https://xesaranit.weebly.com/uploads/1/3/2/6/132696194/4091873.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/a7a2ad7c-d305-4450-91af-917b2387e7fb/notagadezenawabezuzedavo.pdfIn PDF document text
    • https://botebofeji.files.wordpress.com/2020/11/15963812645.pdfIn PDF document text
    • https://s3.amazonaws.com/dazinibonofobi/wiseganu.pdfIn PDF document text
    • https://wadagoxipox.files.wordpress.com/2020/11/20789180615.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_off0000832d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x832D 5116 bytes
SHA-256: 30206fe9eb22cf907cbcdb921360249aef2f6cc4979a019dd1c5089fd85406d3
font_01_sfnt_off00009468.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9468 10940 bytes
SHA-256: 618f7a4eeb1d122fe26e6e32f3946ce46b2d1fa744690e87e3e82b48301b0840