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
• Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTH
  A PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
• 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.
• QR-code redirect lure medium SE_QR_LURE
  Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
• 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://hijaustabilo.com/contents/files/nelanejuroderujero.pdf In PDF document text

  • https://ww150003.linebot.net/upfile/files/20210912102607.pdfIn PDF document text
  • http://conwaychristian.org/wp-content/plugins/formcraft/file-upload/server/content/files/1613f39df72304---88151247594.pdfIn PDF document text
  • http://meruzhankhachatryan.com/app/webroot/files/file/saxebe.pdfIn PDF document text
  • https://chrmglobal.com/userfiles/file/wolirer.pdfIn PDF document text
  • https://www.seblocation.com/ckfinder/userfiles/files/71053977900.pdfIn PDF document text
  • https://skvely-kup.cz/files/file/gugugefitofim.pdfIn PDF document text
  • http://sanchariglobal.com/userfiles/file/93970984136.pdfIn PDF document text
  • https://www.andyselfstorage.co.uk/wp-content/plugins/super-forms/uploads/php/files/9m2ivltivp096ug9gqmtij91o2/52642516765.pdfIn PDF document text
  • http://vps73.juicy-group.com/editor_upload_image/file/bebejuritadajanu.pdfIn PDF document text
  • https://naucharts.com/ckfinder/userfiles/files/2239893831.pdfIn PDF document text
  • http://tplustech.com/images/ckeditor/files/12428363087.pdfIn PDF document text
  • http://jinruily.com/UploadFile/file/20210906122746304.pdfIn PDF document text
  • http://paymentsbusiness.ca/wp-content/plugins/formcraft/file-upload/server/content/files/161383752777a1---95728610463.pdfIn PDF document text
  • http://naszymsladem.pl/upload/file/bakor.pdfIn PDF document text
  • https://art-eria.pl/mandarynka/pliki/files/weseveligebajetivumam.pdfIn PDF document text
  • https://irepairplus.nl/app/webroot/files/userfiles/files/veretezulekikiwovezajata.pdfIn PDF document text
  • http://xiangzhuan.tw/upload/files/suwewusafaditujomimabajib.pdfIn PDF document text
  • http://hagelkonzept.com/userfiles/file/6445891358.pdfIn PDF document text
  • http://melvin.cz/data/sixofezuturudetukubipivab.pdfIn PDF document text
  • https://lakecountyoralsurgery.com/wp-content/plugins/formcraft/file-upload/server/content/files/16141505ce05b4---95481586985.pdfIn PDF document text
  • http://mannaz.pl/userfiles1/file/denupizisarugewumuvexu.pdfIn PDF document text
  • http://sinners-party.de/media/file/3538713844.pdfIn PDF document text
  • https://feedproxy.google.com/~r/skout/mBVl/~3/A3Ryygt5BCM/uplcv?utm_term=scanner+app+to+pdf+apk+downloadPDF 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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