Malicious PDF — malware analysis report

Static analysis result for SHA-256 db0268203b911a43…

MALICIOUS

PDF

47.6 KB Created: 2020-10-16 16:02:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 3ad80fbbcf512cd8aac557a5b23a0dff SHA-1: 105c15e149b5d627bfeffe4ed2f388a767db0ceb SHA-256: db0268203b911a4321b792887172c8983ec5b9f492b2fcaf83f420f23aa782d0
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=2018+honda+accord+sport+manual+specs In PDF document text
    • https://cdn-cms.f-static.net/uploads/4368999/normal_5f87dc3dee548.pdfIn PDF document text
    • https://tenagudewujuga.weebly.com/uploads/1/3/1/1/131164273/881570.pdfIn PDF document text
    • https://jonukejunuxesa.weebly.com/uploads/1/3/1/4/131409236/bilodapawisepu_veluvujam_lutugawuwafamut_gomilub.pdfIn PDF document text
    • https://mepetimis.weebly.com/uploads/1/3/1/4/131483418/941b2b10fac1802.pdfIn PDF document text
    • https://fanavepuru.weebly.com/uploads/1/3/1/8/131871984/nogijazipa-gokokawur.pdfIn PDF document text
    • https://jimigafekalese.weebly.com/uploads/1/3/1/4/131407537/c409d22d7f31c56.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/belapigojat.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/xewuj.pdfIn PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/debizikirapanas.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/913eec58-b1cd-445a-b82f-1279c8f3b9ae/77612066047.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd4cecad-3788-4568-b3c6-f6cf29211828/wiwutuvidabexem.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/101c47f2-1a0a-4434-adc2-cc8ebe27e939/83798913597.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a84eddff-68dc-4582-8e67-05880b36ddee/58014017751.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/81ab6bad-208c-4a64-a03e-3c2178a70e79/99772201434.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7767c00f-6aea-4baa-9615-efe0de56d3a3/63470774047.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e386011b-aaf4-4250-be4f-be3e38609164/gubefupofuxupis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e15ee086-99d6-4ed5-b1b5-022631b1dabc/danosutanuvefenopurixo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0572452b-49b7-4216-82ef-7438b8b275df/rimiku.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d598004-0a74-4442-b3bf-9f6877cc8606/gemog.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f65b33d6-0cbf-45d0-a277-de2d8b4a23b3/ramizojupapawurugifotepa.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_off00006ff1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FF1 5740 bytes
SHA-256: 9f3e50f5f4b8a60fded7803fd705ad1e7b16c0d27e1003b7b71c669d6f69d431
font_01_sfnt_off00008331.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8331 14536 bytes
SHA-256: 202693977d35eeb1af4cf62a1d15e9b8876e7537f9598fcdb68935f2b3e2befb

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