Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd8cd4d72f610229…

MALICIOUS

PDF

47.3 KB Created: 2020-11-07 23:56:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-11
MD5: 32052478c4a50120adf3a2da3d483ebb SHA-1: e3b50c05fdf6e3a31c920c99b80b07a204504b9b SHA-256: fd8cd4d72f610229d4767e5a69c1a3189c71250653a21a317929de4aeb0b2ce9
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/123?keyword=earring+template+free PDF link annotation
    • https://tuzatorigipixaz.weebly.com/uploads/1/3/4/3/134321964/zomubovor-luzuxez-tisonar.pdfIn PDF document text
    • https://fifevogu.weebly.com/uploads/1/3/4/6/134602809/koxanowegujikataxo.pdfIn PDF document text
    • https://nozigofomin.weebly.com/uploads/1/3/4/4/134481739/narime-pekebom-xususa-vomami.pdfIn PDF document text
    • https://rixilokif.weebly.com/uploads/1/3/4/1/134109141/b12525df3d7b2f5.pdfIn PDF document text
    • https://zewuxufasebi.weebly.com/uploads/1/3/4/3/134320084/29024.pdfIn PDF document text
    • https://vumorusumanipav.weebly.com/uploads/1/3/4/2/134234742/nesoza.pdfIn PDF document text
    • https://xumabilere.weebly.com/uploads/1/3/1/1/131163638/5114492.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374857/normal_5f8e6116bef68.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424935/normal_5fa109336aacf.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/rujimidujek/mowawitonijojenajubeleboz.pdfIn PDF document text
    • https://pafegum.files.wordpress.com/2020/11/xumakosokidazok.pdfIn PDF document text
    • https://s3.amazonaws.com/damerirazib/32853702560.pdfIn PDF document text
    • https://bejagidet.files.wordpress.com/2020/11/jizokipometazud.pdfIn PDF document text
    • https://s3.amazonaws.com/xaliwalufoguni/bronsted-lowry_acid_base_reaction.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_off00007c66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C66 5000 bytes
SHA-256: f97863d86e0a1e333aa953afbe2a2e9cfc2adac2f0ce62b117a76ee7e5e33f59
font_01_sfnt_off00008d5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D5A 10380 bytes
SHA-256: f9742e3746dad4bdcfbccfb3c25ec0c3e7d4782a6956d7855ae9528fef966c4d