Malicious PDF — malware analysis report

Static analysis result for SHA-256 302141d240ce7b83…

MALICIOUS

PDF

35.3 KB Created: 2020-10-02 05:47:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 9e49f04de8e0beea3a1679828e29fcd3 SHA-1: 982882a228cde52aeb126db8da4c402e061a3bf9 SHA-256: 302141d240ce7b830c1ccff38c19d12a2adf6a30adc6cd91c80066e21b967eca
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://ttraff.club/pify?keyword=red+roof+inns+chain+guide In PDF document text
    • http://vanefes.texascedarshop.com/uploads/1/3/1/6/131606603/nuvubawuvizirag.pdfIn PDF document text
    • http://files.wisewomanliving.net/uploads/1/3/0/7/130738792/lavopu.pdfIn PDF document text
    • http://files.camdensupply.com/uploads/1/3/1/0/131070378/voburon.pdfIn PDF document text
    • http://guluke.jeremylepisto.com/uploads/1/3/1/3/131379724/wuxeseniwowofumo.pdfIn PDF document text
    • http://files.vapingmecrazynewhope.com/uploads/1/3/0/7/130738796/d9c522.pdfIn PDF document text
    • http://files.kbsakirksville.com/uploads/1/3/2/7/132740399/sudelure.pdfIn PDF document text
    • http://files.bobbienvenu.com/uploads/1/3/1/6/131637178/7ec2ce3b92452.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/5289/4874/files/41534498.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/7073/7570/files/geometry_worksheet_5.5_use_inequalities_in_one_triangle_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6131/2664/files/tolstoy_hadji_murad_analysis.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_off00004a7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A7F 5260 bytes
SHA-256: 44e8a2d1ccd9ae37f9db05dd3a3e18578bc97fcc8c82c3bff64f58ba07650155
font_01_sfnt_off00005c60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C60 10764 bytes
SHA-256: 1ccc1e21f14068c7e054c56a575b3894baf1bc466e9bb60d457d81c4c4f5fddb