Malicious PDF — malware analysis report

Static analysis result for SHA-256 450dfb8dd6554403…

MALICIOUS

PDF

37.1 KB Created: 2020-10-03 00:41:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 724faa2c0fb1e5de89815e85e473891e SHA-1: 5b614dceaa55eaecb38e34a91aa94ec7994b3fad SHA-256: 450dfb8dd65544037639f97b39782a496146555483720c235fe51d3c4b685801
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=framed+ink%253A+drawing+and+composition In PDF document text
    • http://sutav.tasteoflagunabeach.com/uploads/1/3/0/7/130739964/8808591.pdfIn PDF document text
    • http://vodeja.shopdomesticity.com/uploads/1/3/1/3/131381464/litotosunaw_xuxazaxewiku_ridiretofi_damubixizir.pdfIn PDF document text
    • http://files.coyotecreekbooks.com/uploads/1/3/0/8/130874429/ruxidiwosora_sebanizerele_xupikori.pdfIn PDF document text
    • http://files.kiskibands.org/uploads/1/3/2/6/132682882/c0139c0f9f8.pdfIn PDF document text
    • https://site-1036684.mozfiles.com/files/1036684/solifur.pdfIn PDF document text
    • https://site-1037055.mozfiles.com/files/1037055/tirefoz.pdfIn PDF document text
    • https://site-1036858.mozfiles.com/files/1036858/53858284751.pdfIn PDF document text
    • https://site-1038339.mozfiles.com/files/1038339/40571935770.pdfIn PDF document text
    • https://site-1037081.mozfiles.com/files/1037081/lonomeripiburovitaru.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/717dc0ff-daad-423a-9c6e-710767c34536/94106932938.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/228fd167-6771-4964-bb44-865f9704890c/30295924398.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef3c4b04-fb5a-4f1d-8989-0842c6f784f0/57553790545.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f5af764a-b11f-43e2-a423-04a3e573b28b/27148436415.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/1793/2437/files/i_wish_i_could_be_the_perfect_daughter.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/2877/7630/files/xenawezod.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_off00004fdd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4FDD 5520 bytes
SHA-256: 576521835ebc9487d3a0885102b7303a7f76c86dae02ae8de52378bc0e22c356
font_01_sfnt_off000062ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62AC 11376 bytes
SHA-256: 75a2b7949a6e209b66b6e5c909b86829ebfd83ae0b4fe3e6bcbfa217d1860486

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