Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd1c9ddddc38d61d…

MALICIOUS

PDF

70.9 KB Created: 2021-03-06 13:54:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 756e1820db2f6fc193ccdb5385175f22 SHA-1: 86e5888799c938b5235ec4784baadfa898ad15ef SHA-256: bd1c9ddddc38d61dc14767dbb67f412fd061996bb0ceda1b7412ecadc2add899
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://soxebez.ru/wix?keyword=population+paradox+worksheet PDF link annotation
    • http://mixutadumekaje.mypressonline.com/wozenidesanuvum.pdfIn PDF document text
    • https://runewabelew.weebly.com/uploads/1/3/0/8/130813516/28bb17c2.pdfIn PDF document text
    • http://lokubakodo.getenjoyment.net/computational_physics_jobs_salary.pdfIn PDF document text
    • https://nusisudarebo.weebly.com/uploads/1/3/4/3/134349377/c76c65ea5.pdfIn PDF document text
    • http://folugomobok.getenjoyment.net/zafivoludubodumuja.pdfIn PDF document text
    • https://sutogeva.weebly.com/uploads/1/3/0/7/130739298/jenubaburiwo.pdfIn PDF document text
    • http://jonipifenukiz.mygamesonline.org/42447501065.pdfIn PDF document text
    • http://trylait.club/web_services_testing_interview_questions_guru99w5obz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495262/normal_5fc6f7e12a108.pdfIn PDF document text
    • https://nojasiputijaze.weebly.com/uploads/1/3/4/8/134869787/dolefo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376088/normal_602987dc753d2.pdfIn PDF document text
    • http://mitimewigupito.mypressonline.com/thinking_maps_examples_for_science.pdfIn PDF document text
    • http://momsmall.space/42890214263us1pf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448976/normal_6037d9927e536.pdfIn PDF document text
    • http://jedilinosur.mywebcommunity.org/pebble_watch_strap_replacement.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377125/normal_60393562af2a5.pdfIn PDF document text
    • http://rejamar.sportsontheweb.net/matijaw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gototura.myartsonline.com/2013_subaru_wrx_sti_engine_specs.pdfIn PDF document text
    • https://0491f86b-060d-4f4a-be23-b0d01488777f.filesusr.com/ugd/faa7ef_c1e890ba3543484c8641f973507efe99.pdf?index=trueIn PDF document text
    • https://a7193630-a032-4ee2-b136-33837135b76a.filesusr.com/ugd/fac845_14d8defa529e4210989a599163a72d78.pdf?index=trueIn PDF document text
    • https://081e7fb2-604d-424b-9b75-a58d54a71a44.filesusr.com/ugd/abd6ea_ebf78956555247d8baf7b0f35f132da1.pdf?index=trueIn 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_off0000da8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA8C 5272 bytes
SHA-256: 89b02d40a8b77175eae3172a4d16f36913aeed601688d5f691d98172aaaf7040
font_01_sfnt_off0000ec82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC82 9780 bytes
SHA-256: 6f50dd357e0d88aaf18756ac127cda143150d2eb83cc1087eca73828e035923c

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