Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ef5600131cd471e…

MALICIOUS

PDF

43.3 KB Created: 2020-10-03 04:53:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 2509d905f83cdf74f7cbb70fd06a4d19 SHA-1: 2c910f7c392bc2196470a6d18fedbbd3c74e9e37 SHA-256: 7ef5600131cd471ee33fa6b4d9281c2e657cbe3050f66959df0cef79143ceca8
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://ttraff.ru/pify?keyword=vall%25C3%25A9e+de+la+mort+etats+unis In PDF document text
    • http://zunogigox.danielleleach.com/uploads/1/3/1/0/131070213/gobobevomu.pdfIn PDF document text
    • http://kukepore.queensdiner803.com/uploads/1/3/0/7/130775370/8382818.pdfIn PDF document text
    • http://files.adventmoravianbethlehem.org/uploads/1/3/1/3/131381910/bosebamatoza.pdfIn PDF document text
    • http://nimolo.barefoottofino.com/uploads/1/3/2/7/132741009/8569925.pdfIn PDF document text
    • http://files.shynelleagaran.com/uploads/1/3/2/6/132682233/xexalixo_zelixisipovo_difowitola.pdfIn PDF document text
    • http://files.adossdesigns.com/uploads/1/3/1/8/131856041/safumotodini.pdfIn PDF document text
    • http://devetom.alohatherapeutic.com/uploads/1/3/2/3/132302846/7795193.pdfIn PDF document text
    • http://vimosak.speakingevolution.org/uploads/1/3/1/4/131408024/2c48bdd.pdfIn PDF document text
    • http://files.homegrownpets.com/uploads/1/3/0/8/130813427/fde562ec87fe2.pdfIn PDF document text
    • http://lemepox.gabrielnavarrojr.com/uploads/1/3/2/6/132695569/wedox.pdfIn PDF document text
    • http://tegewetum.bgmechanicalsupport.co.uk/uploads/1/3/1/4/131406893/vijiro-marawot-xoker-kevasubumuvo.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/f18608aa-d7e3-484b-bb29-a2dd0a5b82c3/33699666072.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a6a488e1-fcc9-440d-83da-451252178379/9801717794.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a4f5f61d-ea8a-4775-aefe-49152c889efa/56464170498.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d59557e4-ea43-408b-bf24-0f79723c1ac5/30279057821.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/11b5507d-65c9-406a-a0e9-5716f0c97d2a/12381353044.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_off00006542.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6542 5076 bytes
SHA-256: 68180d5c38fc848e6bf7a2d0203127ff6f6299e86295bb0a287bee38a91fc245
font_01_sfnt_off00007629.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7629 12596 bytes
SHA-256: bf992b887619ab6735097dfaa0d08a56236aadfb9f4d7b4804267f045e150663