Malicious PDF — malware analysis report

Heuristics 7

• 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.
• Image-heavy PDF with invisible link to suspicious domain high PDF_SUSPICIOUS_LINK_LURE
  PDF is a small image-heavy lure with invisible link annotations that send the user to a suspicious high-risk-domain URI. This matches credential-phishing carriers where the visible document is only a prompt and the real collection flow happens on the linked website.
• 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://bologen.ru/123?utm_term=scientific+reports+expected+impact+factor+2018 PDF link annotation

  • https://static.s123-cdn-static.com/uploads/4391899/normal_6004b22b27eb0.pdfIn PDF document text
  • http://dayzcommunity.info/31873060242r9157.pdfIn PDF document text
  • https://femomupine.weebly.com/uploads/1/3/4/4/134458898/ce12b310cf2a20.pdfIn PDF document text
  • http://italy50wow.pro/avast_premier_2019_offline_setuphhxen.pdfIn PDF document text
  • https://xedaliwim.weebly.com/uploads/1/3/1/4/131454603/wuwonixotuva-zibisomofobi-lifed.pdfIn PDF document text
  • http://pefilimozol.iblogger.org/57247913546.pdfIn PDF document text
  • http://securityofusersdevicesonline.site/change_conditional_sentences_into_reported_speechh6oza.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4384484/normal_603d95ef230dd.pdfIn PDF document text
  • https://vobulesije.weebly.com/uploads/1/3/1/8/131857334/f3d52.pdfIn PDF document text
  • https://mudulavodeg.weebly.com/uploads/1/3/1/0/131070753/gumifugume.pdfIn PDF document text
  • http://natur-green.fun/225203819318dxn3.pdfIn PDF document text
  • https://jubigugatuse.weebly.com/uploads/1/3/0/7/130775741/narufodufinuko.pdfIn PDF document text
  • http://instup.xyz/8012466908641slb.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • https://5d3a3edc-1384-4eb0-a354-174dd54c13aa.filesusr.com/ugd/7f5dc5_6ec1120427934712bc6159a497b07c1a.pdf?index=trueIn PDF document text
  • http://makidibe.epizy.com/musorekunowukexivusini.pdfIn PDF document text
  • https://05491ccc-77c7-428b-9c25-74f2c6c50d4a.filesusr.com/ugd/d51d36_db621949b7114695ac29b34788e6adc1.pdf?index=trueIn PDF document text
  • https://737c154f-ca75-4484-807d-9d5c19d76377.filesusr.com/ugd/7e84b7_04d5235fb62b403e90beab8816682a35.pdf?index=trueIn PDF document text
  • http://luvebex.rf.gd/4g_lte_switch_base_mobile_apk.pdfIn PDF document text
  • https://d86ad34a-7df2-4f47-937b-a12ab5abc0fa.filesusr.com/ugd/8cbfce_005477cc7a624271a5144d79678f6831.pdf?index=trueIn PDF document text
  • https://08202b68-adf4-4b7d-bb06-fcebe54c78b8.filesusr.com/ugd/76dd3d_f190db89b8254aa189615680bad7d2a7.pdf?index=trueIn PDF document text
  • https://4779f2f8-a33e-4327-9c78-21ee0bcf4620.filesusr.com/ugd/31bf02_7a6566a0d719460aaf7ce1cda91c3c09.pdf?index=trueIn PDF document text
  • https://83f018a0-8e49-44f0-b57e-805e464a5f06.filesusr.com/ugd/10a4aa_ff8d5daab2fc4300b2ad3522de1665cc.pdf?index=trueIn PDF document text
  • https://d19688e0-347f-4d9d-8cb3-d47c6e049f3d.filesusr.com/ugd/c618e9_6ebfd05449b54e6c830e1cb0ca7d90ba.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

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