Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ea25778c8c192af…

MALICIOUS

PDF

36.1 KB Created: 2020-11-02 17:46:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 19c4a455543875e1f2e76f462278bd05 SHA-1: 7eb0d79ebd83039676b36ab720ecc5c457c3b755 SHA-256: 9ea25778c8c192af87e2c33e49de1ad2d4ef34d12c0f1d60a85de6295acc9d3b
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link farm and a direct link to known malicious redirector infrastructure at 'https://ttraff.com/123?keyword=westwood+high+school+gillette+wy'. The ML classifier also strongly indicated maliciousness. The presence of multiple external PDF links suggests an attempt to manipulate search engine results or distribute further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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://ttraff.com/123?keyword=westwood+high+school+gillette+wy In PDF document text
    • https://cdn-cms.f-static.net/uploads/4372702/normal_5f891104364e7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372673/normal_5f93a8237f795.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380223/normal_5f8c8db0ba67d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367297/normal_5f88a95d70f52.pdfIn PDF document text
    • https://vefotufujipewux.weebly.com/uploads/1/3/4/4/134401009/gavokukire_nilivi_mijidukofamosoj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408601/normal_5f9be4f3904c5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373264/normal_5f9a9de190c31.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383692/normal_5f8d1c521f512.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379964/normal_5f8de2b829fb4.pdfIn PDF document text
    • https://fupiloxeti.weebly.com/uploads/1/3/4/3/134380404/rapawuw-noveneguxidav-lisipujal.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421473/normal_5f96f8a327da8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388052/normal_5f8f65dab8c19.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/2db13e58-c3d5-47a5-b0d7-8fe49c5a0924/fozidobovitozexeferot.pdfIn PDF document text
    • https://s3.amazonaws.com/voxulija/vitinilesofume.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/12a81ac4-762e-4899-afb8-2520b2ff2563/15310555449.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000469a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x469A 4784 bytes
SHA-256: b8058b2a430e9e6ef36755183435c2e19ea140df03216a670819b62641ec13c6
font_01_sfnt_off0000570b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x570B 9012 bytes
SHA-256: 644fb0b6ba1d514fa9f46424d8c3aca0f72c911cd11175be9434f45313799100
font_02_sfnt_off000075a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75A1 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

Open this report in the interactive analyzer, or submit your own file for analysis.