Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f98da77e321c6bd…

MALICIOUS

PDF

48.3 KB Created: 2020-10-25 12:13:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 6b6e7a248005e2841f2a2b1edb612b5f SHA-1: 0759f54c1307e5667f37dae40e61a6e9db7a4258 SHA-256: 2f98da77e321c6bd2dfb63d0d9cf4cff4678440cae8d06840db9195ca9bb7b97
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.link/pify?keyword=tranexamic+acid+for+melasma+pdf In PDF document text
    • https://rokufekajo.weebly.com/uploads/1/3/0/8/130814342/vuvolonasase-jijifidelenum-lemilaj-dexiboxe.pdfIn PDF document text
    • https://jubunukaf.weebly.com/uploads/1/3/1/4/131483214/8278019.pdfIn PDF document text
    • https://ninukiwipovesot.weebly.com/uploads/1/3/0/9/130969879/rimel-pikodanujew.pdfIn PDF document text
    • https://rikisuluwujufa.weebly.com/uploads/1/3/1/4/131452938/81e601f1ba89d1b.pdfIn PDF document text
    • https://xukaxikerebata.weebly.com/uploads/1/3/4/0/134042698/708b3aac1d8eb.pdfIn PDF document text
    • https://satobolusiv.weebly.com/uploads/1/3/1/3/131398412/4104413.pdfIn PDF document text
    • https://pirizujimo.weebly.com/uploads/1/3/4/4/134454944/rutusalap.pdfIn PDF document text
    • https://vapaniwagivu.weebly.com/uploads/1/3/4/4/134442769/cd36d5b58c9.pdfIn PDF document text
    • https://rovumixonisi.weebly.com/uploads/1/3/4/0/134012407/zuduvemi-wivivozal.pdfIn PDF document text
    • https://tipefejiri.weebly.com/uploads/1/3/0/9/130969755/bivev.pdfIn PDF document text
    • https://gonerogad.weebly.com/uploads/1/3/1/4/131438616/xizokawitigoro_sedawumenaj_guzamexumoke_zunopumuwifilo.pdfIn PDF document text
    • https://tekujutiwud.weebly.com/uploads/1/3/4/2/134234893/ef0dc584260.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369502/normal_5f88823497467.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386365/normal_5f8d06a21cb50.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366063/normal_5f8705c2935c9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380082/normal_5f9268fb7b489.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00007d1f.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00007d1f.bin)
    • https://cdn.shopify.com/s/files/1/0478/4173/8911/files/lukim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/2688/1972/files/22910480524.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/9851/6893/files/world_important_days_of_the_year.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0460/7721/4884/files/40568833527.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/2064/6048/files/nuclear_reactor_simulator.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2479ff0f-2a80-4d0f-852f-84f60622ef85/28397142520.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6ede36b1-4759-42e8-b9fd-2b9e81e9686a/nepuvam.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 extracted file (font_00_sfnt_off00007d1f.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007d1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D1F 5320 bytes
SHA-256: 72cb4139dd9b7da61e36c7bb68259b94dd36b9a05d0a3d41fd3b7ef991c599fa
font_01_sfnt_off00008f18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F18 10912 bytes
SHA-256: d6d09c64bf903cf8b2d5a922cef7f1ca06f286329376505065492bc6e5230490