Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c0337a4dce8d619…

MALICIOUS

PDF

41.1 KB Created: 2020-10-10 21:14:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: d9ec82e40d95e91ac002cf96102ca883 SHA-1: 9229ca16337734e50c4d5c0bfd4d14ed41579a26 SHA-256: 1c0337a4dce8d619644f9a8c609431031b0f4b2e768430ab69ec6804d3f70907
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=raven+440+gps+speed+sensor In PDF document text
    • http://files.1973chs.com/uploads/1/3/2/6/132681617/dapeb_viwedo_lorevolivi_ludojareve.pdfIn PDF document text
    • http://files.infantswimphilly.com/uploads/1/3/0/8/130814666/tofewik_gubatirekifuna_xarugojomares.pdfIn PDF document text
    • http://nurivos.outcomemedia.com.au/uploads/1/3/1/4/131454057/e8343abb3f70.pdfIn PDF document text
    • http://files.akomidance.com/uploads/1/3/1/8/131871665/fivaxaradoso-jafuwelokani-tevim.pdfIn PDF document text
    • http://modutuj.ferrierfashionfabrics.com/uploads/1/3/2/6/132681670/2677331.pdfIn PDF document text
    • https://site-1043437.mozfiles.com/files/1043437/17330277795.pdfIn PDF document text
    • https://site-1037077.mozfiles.com/files/1037077/91654257332.pdfIn PDF document text
    • https://site-1038789.mozfiles.com/files/1038789/4322468853.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/9a31c3ce-3c3c-444a-9eda-c0fa2f9a4f13/71133613387.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0843b51f-9697-4f0a-9ac9-bfd102dbdab9/furorugisexakubelewiv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5859859d-06a8-4e8e-8fb0-673230e82d3a/96468774138.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/224a5070-cea0-46ad-a04e-7fadcb3f8c0c/luladi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d8d9fe4a-3004-4138-bdb9-6d3c2166ea02/29509232535.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d0f7f62-b48b-4364-ab83-f55786e868ad/sekusurenebesi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/53f3686f-17a5-4465-9b04-760120927cac/bitavirodudusadaxu.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_off00006111.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6111 5392 bytes
SHA-256: d9dcd680722a5d66114e9ae1a09f45aa7d33e9628841498f15981b6272728c2f
font_01_sfnt_off00007380.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7380 10488 bytes
SHA-256: ec813f413dcd078be3fc11b860c9c7f82d3e79c797d86739efed47134003dd16

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