Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8068f5ab602ec2e…

MALICIOUS

PDF

57.1 KB Created: 2020-10-05 11:54:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: c7609064458d1643cddf90b5fbbfc682 SHA-1: 72ae8bda6c1f571cc001e8ec9537589dba9d4bab SHA-256: e8068f5ab602ec2ee057428002d52c0de2d43fabb9e5648ff8a8e83a779bf40e
144 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 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.
  • Cloud document impersonation lure medium SE_CLOUD_DOC_LURE
    Document impersonates a cloud file-sharing service such as SharePoint, OneDrive, Google Drive, Dropbox, Box, or Microsoft 365 and asks the user to open, verify, or access a shared document
  • 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://cctraff.ru/strik?keyword=vibe+axcess+universal+remote In PDF document text
    • http://files.vancepta.com/uploads/1/3/0/8/130813134/xotilulukube.pdfIn PDF document text
    • http://xudib.optionsfishing.com/uploads/1/3/1/3/131378816/149ab54.pdfIn PDF document text
    • http://files.synodnw.org/uploads/1/3/2/6/132681513/gidaliwarajo.pdfIn PDF document text
    • http://rereko.fpceadultdiscipleship.com/uploads/1/3/2/6/132695388/6b3c202235.pdfIn PDF document text
    • https://site-1043958.mozfiles.com/files/1043958/mezirufaditupisodegiver.pdfIn PDF document text
    • https://site-1037916.mozfiles.com/files/1037916/84605957596.pdfIn PDF document text
    • https://site-1042551.mozfiles.com/files/1042551/50831248321.pdfIn PDF document text
    • https://site-1037091.mozfiles.com/files/1037091/31723064107.pdfIn PDF document text
    • http://risun.friendsofthefergusonforest.ca/uploads/1/3/1/3/131383544/nutebu.pdfIn PDF document text
    • http://files.freeurnsforveterans.org/uploads/1/3/0/8/130874510/taruro.pdfIn PDF document text
    • http://kiven.iamperfectlychangedandawesome.com/uploads/1/3/1/3/131382028/fomitux-lowonetenibad-wixolumowin.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/8539c051-a0cd-4d75-bce1-1c8bb69ac186/xizutuvedibofafazosina.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1b0dd396-828e-454c-b2a8-c42977ff4e4b/64630738276.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df4fa154-bd8c-4127-a9f1-e5d36d159a93/66435047546.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/30ad2b51-6ca6-466a-8ffa-4b898781da9d/sidebatuvanado.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f7146a5f-bc74-4062-ae40-e637819057e4/92592119943.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_off00009420.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9420 5176 bytes
SHA-256: c2ccdf9636319b85433ad2bd149c1e86591d442abc5b01785ae527cd3026c988
font_01_sfnt_off0000a5b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA5B7 16232 bytes
SHA-256: be76c5d4e70b83bd9bd14000c14e859f77d5d36586ab12abf7f22ce9debddaf1