Malicious PDF — malware analysis report

Static analysis result for SHA-256 96ad5f86cec54f59…

MALICIOUS

PDF

42.0 KB Created: 2020-11-07 22:36:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 260462e9dc757eb483a67250e5147db5 SHA-1: 6a845900922192d5dc803bc679fb55a0e582b8af SHA-256: 96ad5f86cec54f596993a29f0dba39c0a0d706741a4c577bc56d5a2ae74de77a
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafficel.ru/123?keyword=video+to+mp3+converter+apk+download PDF link annotation
    • https://rovatelafewi.weebly.com/uploads/1/3/4/3/134392743/femugoj.pdfIn PDF document text
    • https://powizosiki.weebly.com/uploads/1/3/4/0/134041047/114534.pdfIn PDF document text
    • https://rimesozarabef.weebly.com/uploads/1/3/1/6/131607712/tabutekes_mekiwodeguliva_dasatakikenit_vedatebodameju.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://rotadenig.files.wordpress.com/2020/11/82236523173.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6eafe9ac-e0ad-47fe-92f8-2104cff3bf42/80482400491.pdfIn PDF document text
    • https://sawazomigo.files.wordpress.com/2020/11/sewenanoli.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3434aa9b-b767-455b-b2ac-d0bfea4f32d7/ludakedivuwolabaf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/30e2728c-8342-4866-ae19-fc162febe28d/71414914614.pdfIn PDF document text
    • https://jewemodafor.files.wordpress.com/2020/11/sutazozix.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/edfa7dfb-bce2-49f0-b314-fcf919b2d506/37486097799.pdfIn PDF document text
    • https://lodoxepal.files.wordpress.com/2020/11/vibinofa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b14c856b-5953-4f74-abd8-46ec4023ef1e/fivevanasejopobosogide.pdfIn PDF document text
    • https://rizogawer.files.wordpress.com/2020/11/32158026946.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7df7e0f-9e2f-453c-8a4e-6ab6e2ce2785/98960134955.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_off000063ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63AB 5384 bytes
SHA-256: 00fc65c236d2d2d60bb545d105833a7b7929d14e3bb25149afed6ced07e886fa
font_01_sfnt_off00007604.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7604 10940 bytes
SHA-256: 0bc55b8ecbddd68bae8622d75dd90e1cb90b71e2788255f639a44476f0d328b5