Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe08ca66d8b5d0e8…

MALICIOUS

PDF

51.4 KB Created: 2020-10-25 23:40:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: d32508752d29d759dcaf950caa617f41 SHA-1: 11b46e5c15b6f53f38381e5251c86ea2007efdb3 SHA-256: fe08ca66d8b5d0e8949de39f9f156a52a9d2cea81eec604dfda3cf2097cc805f
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://cctraff.ru/aws?keyword=girl+scout+cadette+badges+pdf In PDF document text
    • https://jarapitoxedomel.weebly.com/uploads/1/3/1/4/131437170/6644034.pdfIn PDF document text
    • https://gumiworawogulaf.weebly.com/uploads/1/3/4/3/134356348/kekifosunusarofav.pdfIn PDF document text
    • https://worozimovazez.weebly.com/uploads/1/3/1/4/131406108/328851324217.pdfIn PDF document text
    • https://gejatovuri.weebly.com/uploads/1/3/1/4/131406669/9478580.pdfIn PDF document text
    • https://jodotabamusunew.weebly.com/uploads/1/3/4/4/134402052/kuluselenudafo-kosotewapubo-jokamux-zuginugokoz.pdfIn PDF document text
    • https://pafetuvuwube.weebly.com/uploads/1/3/4/3/134321561/vaxazivetutodumij.pdfIn PDF document text
    • https://bizumoku.weebly.com/uploads/1/3/2/6/132681494/jujol-degujarovu-vomuvizelog.pdfIn PDF document text
    • https://buxiniti.weebly.com/uploads/1/3/4/3/134309366/8229a1695f18df3.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00007cfc.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00007cfc.bin)
    • http://www.daltonmaag.com/In extracted file (font_02_sfnt_off0000b21c.bin)
    • https://uploads.strikinglycdn.com/files/07617d81-b45f-4a11-a4be-96accae28695/95702479279.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e58afecb-354a-4114-8c88-8c00ca3a03f9/76534209162.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e55aaf32-736d-4ecf-851d-b3034114e183/63711044700.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7ef18fe-b606-473f-bfe0-e537d4b9ee11/rick_and_morty_a_way_back_home_down.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e672e0e0-6baa-4573-a31a-94cb44bc25b6/ai_ki_do.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b2c72c6a-51e4-4cdf-934d-0306c63dc956/mkx_mobile_beginner_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/42f75822-6343-477f-b9fa-9c2f28ad092b/the_pelican_brief.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c5c15e8-700f-4938-a0c6-1054454d95a0/car_dealerships_in_harrisonburg_va.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7421210d-0b82-4152-bb56-a2bd27fef9f1/nirefa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec0d5a13-b6d6-4dda-8550-3851c244c228/54933426632.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/892a387b-80a8-4273-8d61-dbfef03f4c8b/pioneer_grain_sorghum_varieties.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7ca8ec9-c11f-4782-88fc-2944fe6f23b6/69970606373.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/468f3bd7-e39e-4a94-88cb-f139b0b01a6c/44688885250.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/076da665-2715-424e-b70f-e7bd93586298/85121451374.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/06bc9e13-6833-439d-9f70-864bf2b12ff4/5530990228.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6cd51f05-f12d-492f-9315-f6bdb7efe7e9/diablo_3_unhallowed_essence_set_dungeon_guide.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 extracted file (font_00_sfnt_off00007cfc.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007cfc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CFC 5272 bytes
SHA-256: 072f6a979907890121cff469d194f9843f28ee9d920e24a52e3a47ec1249996f
font_01_sfnt_off00008efe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EFE 10236 bytes
SHA-256: dcc9d512b02cd9000d671ddffe0f0dd34ce4f81b981256da290bae7073711693
font_02_sfnt_off0000b21c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB21C 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2