Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3d2219f3e3d8c6b…

MALICIOUS

PDF

41.1 KB Created: 2020-11-06 02:20:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 103704827e6cb6221b0ed38246394474 SHA-1: 02c768bf0df5893b00c99ae3c81d2978307afb6e SHA-256: a3d2219f3e3d8c6ba81c4dfb8598d2d0496a16bef2b6ea595b792a50bc9e2a75
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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://traffset.ru/aws?keyword=greater+weapon+of+the+chosen+pathfinder PDF link annotation
    • https://wanezevidika.weebly.com/uploads/1/3/4/5/134588498/sejifelu_sitot.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365549/normal_5f879a5f74365.pdfIn PDF document text
    • https://gutugifowofe.weebly.com/uploads/1/3/1/6/131606479/93f2622e25.pdfIn PDF document text
    • https://zesopupejilit.weebly.com/uploads/1/3/0/7/130738861/mikapixobofo_rovokimifudi_memiw.pdfIn PDF document text
    • https://rariborujur.weebly.com/uploads/1/3/4/4/134443596/kukaz.pdfIn PDF document text
    • https://lefedatit.weebly.com/uploads/1/3/0/7/130776734/kolopinipaxofep.pdfIn PDF document text
    • https://xivuseto.weebly.com/uploads/1/3/4/3/134316593/1158597.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366965/normal_5f880f07a00d0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370561/normal_5f937eb4a71a1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447280/normal_5f9d4f8cef716.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/fidefofudi/methods_of_amending_the_constitution.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_off0000602e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x602E 5332 bytes
SHA-256: 6779ed26c5010401e8614a16ddd8dde50fc367a1978e8264338dae7ff556279d
font_01_sfnt_off00007262.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7262 10968 bytes
SHA-256: 72d191a4ac682ad811d00583a1bb2f236c8c625d06d872a58225b7e07c02e1e6