Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee89d31382c1e96d…

MALICIOUS

PDF

42.6 KB Created: 2020-10-01 18:10:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: cd4e5e55ba5c9548bd2e17c331964112 SHA-1: 789254ad8ca87085fe5d2a798a3ceba2dced5e7e SHA-256: ee89d31382c1e96dbeef41861ba8c9a1603c26507cc6abeb2326e42d99e46b5c
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://cctraff.ru/strik?keyword=subscription+revenue+model+pdf In PDF document text
    • https://site-1036724.mozfiles.com/files/1036724/45422551095.pdfIn PDF document text
    • https://site-1038547.mozfiles.com/files/1038547/taxumalisu.pdfIn PDF document text
    • https://site-1040284.mozfiles.com/files/1040284/jafabavabepogape.pdfIn PDF document text
    • http://files.vandelia.org/uploads/1/3/2/6/132681219/xulubebelijikap-gugof.pdfIn PDF document text
    • https://site-1039674.mozfiles.com/files/1039674/pijazijitowak.pdfIn PDF document text
    • https://site-1039931.mozfiles.com/files/1039931/jaxakipatorupalukitojog.pdfIn PDF document text
    • https://site-1036818.mozfiles.com/files/1036818/73229333216.pdfIn PDF document text
    • https://site-1037282.mozfiles.com/files/1037282/rokesurobipogokasutoje.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/ae29d96f-70fc-4d0d-99bb-a541ef22703f/11267674110.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5511033a-a014-426a-94b0-742f36f2eb2d/33622552086.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b0ec93e6-52a3-49b6-b549-8a05b27bbe5a/25969230838.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/281d7443-d486-45e8-9a76-a8fd04e2350c/zudilarinivewum.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d82251e-31e4-4cca-b14a-387af657f7a6/runozom.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_off00006756.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6756 5396 bytes
SHA-256: 5fea2ea03ef74ccd39150634337639a80ec14599caceef74d53903c4e5be06c5
font_01_sfnt_off0000799f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x799F 10608 bytes
SHA-256: 154074eaa0532fbd7979f6d67e873456b72e7373f0475c496e7e34591cb7b10f

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