Malicious PDF — malware analysis report

Static analysis result for SHA-256 a852b2248f634bfa…

MALICIOUS

PDF

43.6 KB Created: 2020-10-14 21:22:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 08c93bc5576e5ef7bb6e8d3f559cf4df SHA-1: 80d58b38c405b2c6a2ff01e5d0515c1a22bf6d87 SHA-256: a852b2248f634bfa3a2c5c5c2dea05c0fd4c6e95c32855b8a5bf05a102f2c05d
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/pify?keyword=eurodollar+futures+cme+pdf In PDF document text
    • https://site-1041387.mozfiles.com/files/1041387/gakasisekesusefogav.pdfIn PDF document text
    • https://site-1039703.mozfiles.com/files/1039703/19388047188.pdfIn PDF document text
    • https://site-1037211.mozfiles.com/files/1037211/gorufofonenowipidifadufo.pdfIn PDF document text
    • https://site-1043165.mozfiles.com/files/1043165/fogibiri.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/roruj-fegedevovelere-zexomojikazi-rewubujelem.pdfIn PDF document text
    • https://rakamukomegu.weebly.com/uploads/1/3/2/6/132681656/9889394.pdfIn PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/4867245.pdfIn PDF document text
    • https://pigogokeda.weebly.com/uploads/1/3/1/8/131857695/7538137.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366630/normal_5f87313137c86.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366010/normal_5f87183b2e9c2.pdfIn PDF document text
    • https://site-1038311.mozfiles.com/files/1038311/98269996719.pdfIn PDF document text
    • https://site-1039197.mozfiles.com/files/1039197/togumisivudimek.pdfIn PDF document text
    • https://site-1039817.mozfiles.com/files/1039817/tanifewimemomosunidibu.pdfIn PDF document text
    • https://site-1037160.mozfiles.com/files/1037160/65449255371.pdfIn PDF document text
    • https://site-1040687.mozfiles.com/files/1040687/zabadotivugixufagedera.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/eeda6f88-37c9-4e92-b634-6a6c9e96fb32/76571341967.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a8043676-f794-4c19-80e6-27af0546ffd1/jomotibemafesizomuzani.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2beefdfb-efdf-4262-82ab-03775f61c5af/45527026699.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/41ae1209-9ac2-42ba-a587-f245f7381e0d/kotemotuxuxemiwegojetixup.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b55c6c20-feea-4d1f-b92c-8a670c24756a/87966118889.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/af0fb7a2-5d92-49aa-bc77-0826d8f064f3/32542154764.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/337c6dfe-7516-4bdf-99d9-d694846493fe/logijilulimerunegot.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_off00006a98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A98 5256 bytes
SHA-256: 9d0270298749fdf0d6cb59a2f105f94194463a92f6667369b62b16a223364c58
font_01_sfnt_off00007c68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C68 10732 bytes
SHA-256: fd59aaf896d01edbcb96bae78e510492ede4b2e6ec6c2d22996bd04089505e30