Malicious PDF — malware analysis report

Heuristics 8

• 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 link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
  PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
• Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
  PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 68 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
• PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
  PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
• 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 http://usagimatur.com/files/others/55318124360.pdf In PDF document text

  • https://norservis.cz/files/files/11934588154.pdfIn PDF document text
  • https://austdoorcaocap.com/upload/files/bezuxivomojuxezarodu.pdfIn PDF document text
  • http://shortguycentral.com/ck_uploads/files/48400939055.pdfIn PDF document text
  • http://nnk.gr/wp-content/plugins/formcraft/file-upload/server/content/files/161345d62794c9---rifuzabijafazidemavadino.pdfIn PDF document text
  • http://ylpcl.com/ckfinder/userfiles/files/94518342287.pdfIn PDF document text
  • https://kodeac.com/wp-content/plugins/super-forms/uploads/php/files/fpvibf3scmp48tu37if54j1kgd/xozuzimegukubi.pdfIn PDF document text
  • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f695b499c4---26750958744.pdfIn PDF document text
  • http://mondoacquapiscine.com/userfiles/files/ropevuso.pdfIn PDF document text
  • http://topspeed4wd.com/ckfinder/userfiles/files/44785763784.pdfIn PDF document text
  • http://langfordfinancialservices.com/userfiles/files/5128645575.pdfIn PDF document text
  • http://studioagronomoserragiotto.eu/userfiles/files/gadununoralemexidubotetip.pdfIn PDF document text
  • https://tipresentoio.it/images/file/1821682335.pdfIn PDF document text
  • http://pereplanirovkaoblast.ru/pict/file/38810158874.pdfIn PDF document text
  • http://www.urbanwaterways.info/files/92140730810.pdfIn PDF document text
  • http://ducnhua.com/upload/files/kezipobo.pdfIn PDF document text
  • https://www.sahabatkeluargahomecare.com/wp-content/plugins/formcraft/file-upload/server/content/files/16133b4828698e---dutebi.pdfIn PDF document text
  • http://ambulatorioveterinarioilghirlandaio.it/userfiles/files/25786360409.pdfIn PDF document text
  • http://newo.ru/files/files/nelanub.pdfIn PDF document text
  • https://sardavetri.it/userfiles/file/lekolaj.pdfIn PDF document text
  • http://bon-mar.com/fck_user_files/file/xepojoderidufudigomupu.pdfIn PDF document text
  • https://duext.com/wp-content/plugins/super-forms/uploads/php/files/7d62bd1b7957c28d5d4e024cc5109691/51496037453.pdfIn PDF document text
  • https://acp-luxusingatlanok.hu/ckfinder/userfiles/files/dedajifizagafenomefibosoz.pdfIn PDF document text
  • https://arabadvertise.com/userfiles/files/kekolisizudememetar.pdfIn PDF document text
  • https://xetnghiemadndanang.com/upload/userfiles/files/66850303414.pdfIn PDF document text
  • https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=internet+speed+meter+lite+appPDF link annotation
  • 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://dejavu.sourceforge.netIn PDF document text
  • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

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