Malicious PDF — malware analysis report

Static analysis result for SHA-256 716b18ba82ce90ca…

MALICIOUS

PDF

39.7 KB Created: 2020-09-30 02:47:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 168fd08ffc320b458e6440af41018d38 SHA-1: bc62cb362b5842677034f5265edfd245e28da88a SHA-256: 716b18ba82ce90ca77a9b7e66c78882d92efb3d392c76909adbb22126e9d1e6f
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://cctraff.ru/strik?keyword=learn+english+speaking+notes+pdf In PDF document text
    • http://fipipuw.abiyoga.com/uploads/1/3/0/7/130740490/bigutefugipiweweg.pdfIn PDF document text
    • http://files.joyfuljourneystravel.com/uploads/1/3/1/8/131857916/darutol.pdfIn PDF document text
    • http://jifuzanas.athlons.uk/uploads/1/3/0/9/130969114/vifujigumekibut-togarejutus.pdfIn PDF document text
    • http://files.voherkimer2020.com/uploads/1/3/2/7/132740361/sesamo_vegutetugo.pdfIn PDF document text
    • http://files.joyanddaisies.com/uploads/1/3/1/4/131437949/litik-fevutivadip-polomog-sipofere.pdfIn PDF document text
    • http://gepumat.exilesbazaar.com/uploads/1/3/0/7/130775545/firoledarige_genivomabifenuz.pdfIn PDF document text
    • https://site-1036939.mozfiles.com/files/1036939/nixujovetubinufagivuguj.pdfIn PDF document text
    • https://site-1036629.mozfiles.com/files/1036629/26026083306.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/df8542bb-bd9e-441a-94de-61e2d8b0e862/lutikasenewobugedipu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c2f2c1f-97eb-4b91-8698-20eb7f9bf86a/gavawasuzosibaxopezej.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f776aacf-63e1-4b76-b714-796d1949c7f6/vimojekolipe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aa27a60d-9f1c-4750-b31e-cc9b19f33b08/90834814629.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88cf15da-47d5-4ee2-942a-b39ba1fd8e67/wisaxisitutafovasaluwuw.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_off00005dc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DC6 5308 bytes
SHA-256: 49d477340dc8d1a93392fe71252178dff9ac983808d69d73710dccab60a1a5dd
font_01_sfnt_off00006fd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FD6 10060 bytes
SHA-256: 98e078ede4196b017e9910369ac7a2ee1900127f8d10e3e593b81b054246b0d3

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