Malicious PDF — malware analysis report

Static analysis result for SHA-256 8532f7564efb8a68…

MALICIOUS

PDF

40.2 KB Created: 2020-10-15 20:08:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 3e942a4e2ffa717342a56ce262ee6a9c SHA-1: 102f42e3f1960df9f47726eb86ab2832c2dc0780 SHA-256: 8532f7564efb8a68c07b8060ac6f4aa3a8f3a4f3e372883a875bee23d6926cc9
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://cctraff.ru/123?keyword=md+anderson+medical+oncology+book+pdf In PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/e5bcd2697.pdfIn PDF document text
    • https://sesuwulot.weebly.com/uploads/1/3/1/4/131438847/dokafopenivoziduf.pdfIn PDF document text
    • https://babikovinemixe.weebly.com/uploads/1/3/1/8/131856339/2bb742.pdfIn PDF document text
    • https://rimesozarabef.weebly.com/uploads/1/3/1/6/131607712/mefilanube-sijajof-nuralenutuduz.pdfIn PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/vunud.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365546/normal_5f871c6dbb883.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365600/normal_5f8706ed2bb2e.pdfIn PDF document text
    • https://fodezamu.weebly.com/uploads/1/3/1/4/131407453/wijigomofiweb_lotitosede_jukis_dirum.pdfIn PDF document text
    • https://xazapadikud.weebly.com/uploads/1/3/1/8/131871762/vagakolikerab.pdfIn PDF document text
    • https://lixaworone.weebly.com/uploads/1/3/1/8/131871871/vegijotu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369651/normal_5f87d4d03f779.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367635/normal_5f875040b4fd5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366327/normal_5f87277bb7771.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367302/normal_5f87deb118016.pdfIn PDF document text
    • https://site-1043705.mozfiles.com/files/1043705/18792240752.pdfIn PDF document text
    • https://site-1041285.mozfiles.com/files/1041285/gamoxofi.pdfIn PDF document text
    • https://site-1042983.mozfiles.com/files/1042983/87144504157.pdfIn PDF document text
    • https://site-1040095.mozfiles.com/files/1040095/keraziwit.pdfIn PDF document text
    • https://site-1038670.mozfiles.com/files/1038670/titafumiri.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3284/5207/files/42953442599.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/5641/2845/files/cyber_security_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0646/6976/files/42701179158.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_off00005cc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CC3 5784 bytes
SHA-256: 2525a5bfb1ef550c1437a9e110fcfa7df61827df94e54508a37ee6933e117eb1
font_01_sfnt_off00007073.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7073 10192 bytes
SHA-256: 5b8e2a8ec8ab05906bfba30096dd66cfb2108e99e914327bc6d39ae9955b6083

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