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
• 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.
• Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
  PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
• LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
  Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
• 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://crophysi.ru/123?utm_term=best+external+hard+drive+for+photos+2020 In PDF document text

  • https://mazekijaxok.weebly.com/uploads/1/3/1/4/131453602/nesonewowilu-movomapowif-kuvegoga-gapow.pdfIn PDF document text
  • https://cdn.sqhk.co/gikunixa/bjhgege/davogebifelobipuses.pdfIn PDF document text
  • https://gizutiki.weebly.com/uploads/1/3/4/4/134478998/gufamudalubosavolib.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • https://s3.amazonaws.com/nademopor/kuwuwuga.pdfIn PDF document text
  • https://s3.amazonaws.com/xugigabitulu/the_care_bears_movie_1985.pdfIn PDF document text
  • http://laragusezeji.rf.gd/powershell_regex_cheat_sheet.pdfIn PDF document text
  • https://s3.amazonaws.com/kezemiradigu/guideposts_daily_bread.pdfIn PDF document text
  • https://s3.amazonaws.com/pukaridimupo/basara_2_iso.pdfIn macro / runtime command snippet
  • https://s3.amazonaws.com/rumezo/puzugobu.pdfIn PDF document text
  • http://fawivemepogu.epizy.com/sans_bad_time_simulator.pdfIn PDF document text
  • https://s3.amazonaws.com/wovedukevikov/gst_law_manual_2019-_20.pdfIn PDF document text
  • https://s3.amazonaws.com/kudefem/73083298360.pdfIn PDF document text
  • http://bimekikup.epizy.com/very_short_fairy_tales_in_english.pdfIn PDF document text
  • https://s3.amazonaws.com/wumodukubaru/99631049051.pdfIn PDF document text
  • https://s3.amazonaws.com/salosibejodod/75503490459.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
  • https://s3.amazonaws.com/keIn macro / runtime command snippet
  • http://scripts.sil.org/OFLIn PDF document text

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