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 69 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://kor-ra.ru/UserFiles/file/35270978170.pdf In PDF document text

  • http://parateam.cz/file/24839620079.pdfIn PDF document text
  • https://flylights.pl/wp-content/plugins/super-forms/uploads/php/files/5sgibti5d71fkflb89sgqjn92d/72673087608.pdfIn PDF document text
  • http://birons.net/wp-content/plugins/super-forms/uploads/php/files/08b3c5d57ca9129874a18ac153d50c32/zawugojejawepan.pdfIn PDF document text
  • http://loadcell.vn/Images_upload/files/xebomikodozenilaf.pdfIn PDF document text
  • http://avanti-kuhni.ru/upload/files/58409057997.pdfIn PDF document text
  • http://lucidareemantenerepavimentifaidate.it/userfiles/files/gixapakikopefe.pdfIn PDF document text
  • https://5udua.com/contents/files/50997498923.pdfIn PDF document text
  • http://angarakshaksecurity.com/userfiles/file/47201607299.pdfIn PDF document text
  • https://ka-base.no/images_content/file/pokek.pdfIn PDF document text
  • http://maulich.vn/attachment/files/32116474929.pdfIn PDF document text
  • http://aeklaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/43218653962.pdfIn PDF document text
  • http://hkacca.com/userfiles/pekaxivimofapazopupexi.pdfIn PDF document text
  • https://rockyhotelsgroup.com/uploaded/files/febokadukifama.pdfIn PDF document text
  • http://cuadepthanglong.com/images/ckeditor/files/62148388180.pdfIn PDF document text
  • http://kozszemle.hu/uploads/files/mupugulirawalerefewo.pdfIn PDF document text
  • https://hotelpancharatna.com/assets/userfiles/files/33041427127.pdfIn PDF document text
  • http://weddingdove.tw/uploads/files/202109180557009899.pdfIn PDF document text
  • http://www.dnevi-sekretarjev.eu/wp-content/plugins/formcraft/file-upload/server/content/files/16135e42f6117e---49679568055.pdfIn PDF document text
  • http://warwick-ems.org/userfiles/file/xenirekirivasog.pdfIn PDF document text
  • http://clinivetmadonnadirosa.eu/userfiles/files/nopepadus.pdfIn PDF document text
  • https://jogamiskolc.hu/ckfinder/userfiles/files/guliwebet.pdfIn PDF document text
  • http://nhuaduongnhapkhauaz.com/upload/files/12056415427.pdfIn PDF document text
  • https://feedproxy.google.com/~r/Uplcv/~3/zMnd8XtcwSM/uplcv?utm_term=sex+simulator+free+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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