Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbcc73c6e7f2e5fd…

MALICIOUS

PDF

50.7 KB Created: 2020-10-17 01:02:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: 6ce178292bdcf330b6718490b2b2a94e SHA-1: 30263951990180ce0bdeefcafaf8967c79c5085b SHA-256: bbcc73c6e7f2e5fde12616b05282e9b745e4022c2dc1d242c126e8aa78c1b9fd
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://ttraff.club/123?keyword=cocoa+farming+in+ghana+pdf In PDF document text
    • https://dejolezeg.weebly.com/uploads/1/3/2/8/132815968/bavorivomosagivize.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369306/normal_5f882884da93b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372104/normal_5f8938231e542.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/7a0e3fde-e76b-494c-9825-a339ece9fc62/lujuxepe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c4813d2-705c-42ad-8e2d-f46b0da62884/xovodevepafutaxixazep.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be511a26-9e78-4a37-858d-431da95563c3/fetujixovewilegexuwaxamex.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5acfd079-13e8-496f-a2d2-e59d3f9b773c/doxasupurebezarenixejeb.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b141d9b7-ef42-4fc7-9b39-46a732f7965d/5655682301.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/167dab09-d99d-48ce-b21c-e9289b774c74/jivevag.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/28af0271-3c9d-4c29-9033-5325d422b519/70934845730.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9979424a-b102-4117-93cd-a45ad97eb1e4/86590256193.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/969c573b-dd2e-429e-926f-c428f61ad185/94424338977.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c28db7eb-ab3b-47c1-8a87-eb0aadd10b76/93436156446.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/79e8187e-b194-468a-aa39-cc4deb427dfd/fuguv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/7357/1489/files/rudofepumevurebixef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/8208/0943/files/one_nation_build_18.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3956/3686/files/honeywell_rondostat_hr20_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/3647/2992/files/gujarati_bhajan_free_download.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_off0000877f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x877F 5264 bytes
SHA-256: a176e6d2c1be8f2b8d3c34d18fcb8ff8bbd98fe981e08c684dbdd87e00c286c0
font_01_sfnt_off0000992a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x992A 10656 bytes
SHA-256: ec826105f5b0f8567242f9574c37783030be241b5ca272a8fc60c4fe23654243

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