Malicious PDF — malware analysis report

Static analysis result for SHA-256 83d33618d6f1156a…

MALICIOUS

PDF

45.8 KB Created: 2020-11-09 07:38:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 1f5a8ee52fa5dfe904e8614564bcda7c SHA-1: ee9cd3114a0ed6609c459bb0179d3fd69386bb08 SHA-256: 83d33618d6f1156a4b8214c79c64e84dfbebcd41c9aca01cf19fd26d965b8f94
66 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafffe.ru/123?keyword=always+harry+potter+gif PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4445116/normal_5f9f1879af5b9.pdfIn PDF document text
    • https://panidulupeju.weebly.com/uploads/1/3/0/9/130969186/2911471.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413347/normal_5f941c9156f55.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://kejepototoga.files.wordpress.com/2020/11/jonirerurataxi.pdfIn PDF document text
    • https://s3.amazonaws.com/jumedemimo/the_story_of_my_life_book_in_hindi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f62a387d-2094-47ae-927b-4021d5ee249b/woniluxubelelolajizuni.pdfIn PDF document text
    • https://s3.amazonaws.com/jofunozuzof/robamobugeteze.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe512e6e-c3e8-462f-8b98-48074711fe8d/mini_dozer_for_sale_uk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4a92cfd5-da61-449a-b585-7f13fb36e245/verbos_irregulares_y_regulares_en_in.pdfIn PDF document text
    • https://zatejoru847961968.files.wordpress.com/2020/11/72489844693.pdfIn PDF document text
    • https://pusewekamavo.files.wordpress.com/2020/11/lugipuzisikikupuvepupe.pdfIn PDF document text
    • https://lowewewa.files.wordpress.com/2020/11/supaden.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a814787e-b18d-4436-af16-a31a03278e39/dixit_rules_for_two.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee49c35b-5ec9-48f0-8b30-fa522bb6d5e0/angle_drill_guide_diy.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_off0000723d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x723D 5348 bytes
SHA-256: 7b51e216ed5b68d4fe5427d39e8551dfdd62be9cefdf9b79e34df2735d6749c0
font_01_sfnt_off00008482.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8482 11344 bytes
SHA-256: fd2ce7efd580d759aff91d8e46e388b173d983b9a94def8a8b000c3cc7e75724