Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c2e18c1abb74208…

MALICIOUS

PDF

46.8 KB Created: 2020-10-04 01:11:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: d49f820034d833a0a8d8bb7f3c83aa61 SHA-1: 594915c8bc17d1bab9d86f2cc2b7459bafc55afe SHA-256: 1c2e18c1abb742082528aa70ae5a0686bcf54aed20a28eba6ae20fd158731cc5
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://gettraff.ru/strik?keyword=johnny+got+his+gun+pdf In PDF document text
    • http://files.brewerstreetfarmhouse-weddings.co.uk/uploads/1/3/1/3/131381985/mulugumonefori_sovevuni.pdfIn PDF document text
    • http://files.patokavalleycte.com/uploads/1/3/0/8/130873758/pawofutubotajeb-mazonobebazuli-lilenuterevor-xugalobepuz.pdfIn PDF document text
    • http://poxipuxof.kinhaven.com/uploads/1/3/1/4/131410012/b2c0b4d6a4f7b67.pdfIn PDF document text
    • https://site-1036721.mozfiles.com/files/1036721/18719039076.pdfIn PDF document text
    • https://site-1039838.mozfiles.com/files/1039838/xoximuwevemoxatinubes.pdfIn PDF document text
    • https://site-1039852.mozfiles.com/files/1039852/38297747054.pdfIn PDF document text
    • https://site-1039570.mozfiles.com/files/1039570/numamawubuvobow.pdfIn PDF document text
    • https://site-1037124.mozfiles.com/files/1037124/maduxukodatiwiro.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/f6078f12-79f5-4228-a7b0-b84b1798f05a/tisofizulagidogoru.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/363a19b6-b61a-4fb0-9dde-0aaad7942b6c/32117461380.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/697639db-a78f-48bc-b9cc-b8c5b5b05fac/genudijelivojuduboxof.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/363ad3ae-984f-47ed-804c-ac43a0d56f4e/93924123394.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea35d75e-9bbe-483e-9b24-64ce46860f63/berizuxubexadopar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/09b652a9-13be-4d07-b217-6c0674e0e503/61268053386.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/05c25e5d-1539-4521-b9bc-9ec8e443edd2/93370149151.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006df6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DF6 4820 bytes
SHA-256: 672f9f2c04d368507682100a78b66b81c11fb81c8898d340162910313ebe7778
font_01_sfnt_off00007e5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E5A 9956 bytes
SHA-256: 1e233cbf9539ba0b96acaa6e31853f4a3b84dcf38cc16138db8fec0c85171ff4
font_02_sfnt_off0000a080.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA080 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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