Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fb47f06295991c8…

MALICIOUS

PDF

46.2 KB Created: 2020-10-16 07:20:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: d37eadc0ae3043fd0bfd20fbefb1c160 SHA-1: e3de79f514dfc58c61095c90956d0e6c682da977 SHA-256: 7fb47f06295991c8588e3571363c9804134baf2bfa5e26cbcae118ed558d5ffd
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://ggtraff.ru/123?keyword=bearing+press+fit+guide In PDF document text
    • https://site-1042824.mozfiles.com/files/1042824/47795034320.pdfIn PDF document text
    • https://site-1045312.mozfiles.com/files/1045312/64071795148.pdfIn PDF document text
    • https://site-1040284.mozfiles.com/files/1040284/lijogalawuzexurud.pdfIn PDF document text
    • https://site-1041922.mozfiles.com/files/1041922/96699324587.pdfIn PDF document text
    • https://site-1040766.mozfiles.com/files/1040766/savolugesibok.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367303/normal_5f891e8881f34.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366050/normal_5f8707626adda.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365591/normal_5f88c33c5a317.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371783/normal_5f88be710bb2f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366302/normal_5f8733649cb70.pdfIn PDF document text
    • https://gukaguse.weebly.com/uploads/1/3/1/3/131398473/konozevudigesu.pdfIn PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/dozafawegikuxoto.pdfIn PDF document text
    • https://xebikazogede.weebly.com/uploads/1/3/2/7/132740990/3937250.pdfIn PDF document text
    • https://tugajepefur.weebly.com/uploads/1/3/1/4/131453805/5436432.pdfIn PDF document text
    • https://dojudiwoju.weebly.com/uploads/1/3/1/4/131406456/5531862.pdfIn PDF document text
    • https://dosaremuxabibi.weebly.com/uploads/1/3/0/7/130739916/fd972712.pdfIn PDF document text
    • https://ridolagu.weebly.com/uploads/1/3/0/7/130775195/gojagativite.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368984/normal_5f87cc5a15d47.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365660/normal_5f873abc558ed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369150/normal_5f8817ec3a277.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365552/normal_5f8763faa2e87.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365591/normal_5f872d70dd820.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370078/normal_5f88a5af086bf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off000076d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76D1 5224 bytes
SHA-256: 22c366f9475d86d135277a13b45f0e407f6b1d6097618f5d945fe57c1d2a3c0c
font_01_sfnt_off000088a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88A4 10256 bytes
SHA-256: 103fb28da9431ea3973765b87a9e55fc61e81fdee52e5867f6b4f7a9e426780d

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