Malicious PDF — malware analysis report

Static analysis result for SHA-256 afc1b9b414d2d227…

MALICIOUS

PDF

43.1 KB Created: 2020-10-11 00:50:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 043126dc09cda71b5182c36f3cb0fe2e SHA-1: c74725cf378b15ae4be1acb736d85b9a83c2b1ce SHA-256: afc1b9b414d2d22791a7b6d16af58685e6b56d703181faaa1c5b7be9698bca0c
124 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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 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.link/pify?keyword=school+supply+list+for+middle+school In PDF document text
    • http://lelofu.tidyaire.com/uploads/1/3/0/7/130776485/zariw.pdfIn PDF document text
    • http://files.strokecarelongisland.com/uploads/1/3/1/4/131408415/e4d01fecf6771cf.pdfIn PDF document text
    • http://files.panama-yachting-services.com/uploads/1/3/2/7/132740337/pobubuwapulijojetaka.pdfIn PDF document text
    • http://files.lovefeastgathering.com/uploads/1/3/0/8/130873715/5888184.pdfIn PDF document text
    • https://site-1037102.mozfiles.com/files/1037102/zepifefesabub.pdfIn PDF document text
    • https://site-1037149.mozfiles.com/files/1037149/zutanonimelojegu.pdfIn PDF document text
    • https://site-1036665.mozfiles.com/files/1036665/tulirafezuwogesisog.pdfIn PDF document text
    • https://site-1036832.mozfiles.com/files/1036832/4321065495.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/24ca57a6-692f-48ba-ba6a-ec63dfe97abb/zatirofozoledapipugedifu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dba2d853-df44-46f3-ab9d-54f046ba4da2/rogafijefogimojakiru.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/453c0e11-5f4b-4066-ba81-d5c38f2bf257/lowitaxer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dbdc7ac0-71e8-42fb-9d28-7c0c4f0038d4/14232789747.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/336fe2b3-f33f-40e7-9707-173eac6842b8/26383990621.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/04ce62fc-f09f-400d-8bd1-27881b1ab074/mamis.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_off000069e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69E1 5392 bytes
SHA-256: 4b228e0e4452f4989b09e5c92500bfbd542042c09e51a78a863548b73311a007
font_01_sfnt_off00007c12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C12 10320 bytes
SHA-256: 754019fcc16bd2f7766f94c4a4aaee6ddc853af4cbb222108f9c651a3dcab740

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