Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad9107cadfa768a7…

MALICIOUS

PDF

42.0 KB Created: 2020-10-10 07:52:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 3a272343311a7ff1c8631e7d68c64649 SHA-1: 751f6ae31317fdfc93860600b71326727e79bc2b SHA-256: ad9107cadfa768a7c64cadfb56b5fe4ffdce418bb2813a3a4c301572b6aefdc4
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://gettraff.ru/strik?keyword=grim+dawn+warrior+guide In PDF document text
    • http://xizerarur.texasavidoutdoors.com/uploads/1/3/0/7/130775710/4549482.pdfIn PDF document text
    • http://nipug.aei.agency/uploads/1/3/2/6/132680856/bipopodu-mubawekelekofa-binukeduvejatu-revopekizesumox.pdfIn PDF document text
    • http://gulowo.theleiflibrary.com/uploads/1/3/1/4/131407537/90f1ee2bae8.pdfIn PDF document text
    • http://zibufoju.yachtingexperience.com/uploads/1/3/2/6/132683438/25ac5.pdfIn PDF document text
    • http://files.imprintmarketing.com/uploads/1/3/0/8/130814676/1758134.pdfIn PDF document text
    • http://files.noteworthyministries.org/uploads/1/3/0/7/130775182/vakusunazu.pdfIn PDF document text
    • https://site-1040143.mozfiles.com/files/1040143/17750814474.pdfIn PDF document text
    • https://site-1039346.mozfiles.com/files/1039346/77143259880.pdfIn PDF document text
    • https://site-1038779.mozfiles.com/files/1038779/dibumeb.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/791d2429-1d4f-4d0c-a4a7-5444efd4271b/3595501569.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/728bb8cd-0029-48c4-b2bd-b45d52b4f959/zaxajakeneb.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_off000066c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66C1 5060 bytes
SHA-256: 4fdf0615cfcb1bf3ff46a9da1ba41716ff9ca119d6119d246e87ed09bb7a2128
font_01_sfnt_off000077f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77F1 10552 bytes
SHA-256: e3389d9240ae4aa12a4702c2f77b84cdec7cac696340c7ca5f8f8c5842badaca