Malicious PDF — malware analysis report

Static analysis result for SHA-256 b286f334b5b10fad…

MALICIOUS

PDF

42.0 KB Created: 2020-10-02 17:41:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 92a768feca6e3fdc7ad78ae16f096e2b SHA-1: 64f8b790a0262025545023f8fa048a0257043b50 SHA-256: b286f334b5b10fadbadf962c36acbe0b87cc76f2bd92398835f7c5d69dd30cb1
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://ggtraff.ru/strik?keyword=puede++consigues+un+roommate+en+sims In PDF document text
    • http://files.lifebydesignpa.com/uploads/1/3/1/6/131637291/vevipetasusipup_tipofotadusafe_nurebuwokiwit.pdfIn PDF document text
    • http://files.eastbayareatherapy.com/uploads/1/3/1/3/131380308/baxozoriki_powovorapojes_kuzuxukenogero_fonazivolimuwag.pdfIn PDF document text
    • http://files.tourofguam.com/uploads/1/3/1/0/131070291/fufedimomid-wowiteditedov-robetizifova.pdfIn PDF document text
    • https://site-1038519.mozfiles.com/files/1038519/kagupakaliwudunolawevek.pdfIn PDF document text
    • https://site-1036724.mozfiles.com/files/1036724/fudufumupet.pdfIn PDF document text
    • https://site-1040317.mozfiles.com/files/1040317/sedaxemumukerajujesirix.pdfIn PDF document text
    • https://site-1039417.mozfiles.com/files/1039417/328365235.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/e64811fb-8c5d-4953-8b1c-72cbd69f15c5/detudevuledamaxepusudi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b8290d1b-916f-4101-82ca-af6e5523c00c/11948553989.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e17fb632-49a0-48fe-bdc1-b990d273e4a7/buwovox.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a93ba740-2325-4e7b-b55d-a77f0a2c0591/85041335773.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b13a80bd-194e-43b7-ab2d-3345e0f049a3/63919445749.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/23f31351-6e92-4b6a-bc6d-02b4d6d9e8f7/lupuvapowazi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/599e3c45-9a24-4888-bca1-6524732a7ecf/92324276135.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006416.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6416 5228 bytes
SHA-256: f1dfb209982ddd80590e303e1bb2003fc58e6c17872ce14aa3a86d964db9f9bf
font_01_sfnt_off000075c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75C3 11500 bytes
SHA-256: 398b45e451052aca4a83c937b73ea3ec47e2e0e1fdc6f250ef52944bb90bffc6

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