Malicious PDF — malware analysis report

Static analysis result for SHA-256 c04e9a857c8d8abc…

MALICIOUS

PDF

52.2 KB Created: 2020-10-03 14:30:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 2302257c31d9970db695d30314f706ba SHA-1: 32b038029017303a3cae2cd4a61540b49295a712 SHA-256: c04e9a857c8d8abc652537f8f229ee1679a801d0c9f9197315bfee0d59992d9f
124 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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 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/pify?keyword=spicy+nacho+doritos+review In PDF document text
    • https://site-1038558.mozfiles.com/files/1038558/99637160039.pdfIn PDF document text
    • https://site-1036661.mozfiles.com/files/1036661/bexejovojevuduzu.pdfIn PDF document text
    • https://site-1039355.mozfiles.com/files/1039355/senariguzer.pdfIn PDF document text
    • http://files.whldesign.com/uploads/1/3/0/9/130969473/jofok.pdfIn PDF document text
    • https://site-1036867.mozfiles.com/files/1036867/najamul.pdfIn PDF document text
    • https://site-1038703.mozfiles.com/files/1038703/82687329879.pdfIn PDF document text
    • https://site-1037221.mozfiles.com/files/1037221/vowufopilozuzugilatu.pdfIn PDF document text
    • https://site-1040343.mozfiles.com/files/1040343/ragijepumesebudova.pdfIn PDF document text
    • https://site-1039361.mozfiles.com/files/1039361/13229305102.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/47ba33f1-844a-4bbd-b40a-0718a1fe4f62/81153880693.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8702affe-3aae-4524-955d-96c46e4f99aa/39766760333.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/80aaa34e-af81-4c76-959d-ca7123428f83/tamomoroweki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/94c8ef96-0ebb-45e8-b131-31ea20f23524/39309591886.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/57496596-8ef4-434d-b7d6-ff3e44d186e4/womutafo.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_off00008aa9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AA9 5488 bytes
SHA-256: a15dcdfa4b03d8678db46812ff257410dd0f653751c6c224beef60d77bd518b9
font_01_sfnt_off00009d66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D66 11852 bytes
SHA-256: 63f0e6aa75b8bf0f601eb5297efc37712fd4557a7ac673b712cb6e9ccd5d00cf

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