Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3d058e7c105fc72…

MALICIOUS

PDF

42.4 KB Created: 2020-10-05 01:04:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 4176c8cd7a418a4109b899953cbc8462 SHA-1: ebfff15cf721f002f87082b886b7e960e9b2d5cf SHA-256: a3d058e7c105fc72d87ab043b679d75117f203a999ba7c153233769062120bbe
194 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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/pify?keyword=what+is+print+spooler+service+windows+10 In PDF document text
    • http://dakifuto.charlarae.com/uploads/1/3/0/9/130968961/00d1fb8f6e33.pdfIn PDF document text
    • http://files.thanetpickleballclub.com/uploads/1/3/0/7/130775537/09ffd32912357b.pdfIn PDF document text
    • http://files.frankm-arts.studio/uploads/1/3/0/9/130969036/7162488.pdfIn PDF document text
    • http://zewibab.okxlvbc.com/uploads/1/3/1/8/131856979/vuzezobab.pdfIn PDF document text
    • https://site-1037827.mozfiles.com/files/1037827/mawojokadosimarosafi.pdfIn PDF document text
    • https://site-1039380.mozfiles.com/files/1039380/negotemagunomatijoj.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/dfabbcab-3714-4316-83d4-7c3bf7ad2da7/90520886080.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc6e2eb4-3082-4f27-b379-8a8a62a38919/sesazi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/92a443cb-99e6-4431-992d-6e404ca9a174/84999738317.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee2abc77-84f8-4716-81fd-83d89bc1cac9/69539849693.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/415979ce-fe6c-418d-a3ff-878da302a13a/gotiwojolejox.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c893ee37-3983-412c-8f2f-1bd96b5420e6/44483159802.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e1cd5cc3-aac4-4d16-9616-12641c12fa07/81864218720.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e01c42c4-dc7a-4a56-8516-2751a3facf27/38443759261.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006714.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6714 5520 bytes
SHA-256: c229864de160ee22f1c3da78781398c4f610619cfc742dbb9737d6e8a8ca7a81
font_01_sfnt_off000079ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79EE 10208 bytes
SHA-256: 5d7843f97e0b3877ca951ae07e909079cf34c2874dcefafaea88384685ad3a40

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