Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd7dcebd0f1c3c13…

MALICIOUS

PDF

176.3 KB Created: 2021-12-06 09:02:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-18
MD5: 2a42833872d4a1edd9e7110e7b21eb56 SHA-1: 06bef3885caea6e7a8fdb464b5ce209951e9e664 SHA-256: cd7dcebd0f1c3c13b9a3f33d2f68c0fee9b550db964323101273d49a05460ed2
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

Heuristics 6

  • 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 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://sobinco.cz/ckfinder/userfiles/files/49116170585.pdf In PDF document text
    • https://sweetestspaparty.com/wp-content/plugins/formcraft/file-upload/server/content/files/16197d8202da5a---dogesamimoxunumobal.pdfIn PDF document text
    • https://pepsima.biz/files/file/kinimib.pdfIn PDF document text
    • http://urbariatprasice.sk/upload/file/gowosu.pdfIn PDF document text
    • http://marasintl.com/public/ckfinderuploads/files/98032611856.pdfIn PDF document text
    • https://samsungklimamodelleri.com/upload/ckfinder/files/15508121872.pdfIn PDF document text
    • http://cke.hk/userfiles/nogerot.pdfIn PDF document text
    • http://phrabat.net/UserFiles/File/3651234968.pdfIn PDF document text
    • https://bankubezpieczen.pl/userfiles/file/wetubuzewavutuxe.pdfIn PDF document text
    • http://sibois.eu/userfiles/file/28329403839.pdfIn PDF document text
    • http://srihemkuntsahibfgp.org/hemkunt/userfiles/file/jupukarigemixuvexirotozes.pdfIn PDF document text
    • http://xn--oy2b19v1mb1yi.com/userfiles/file/wenifep.pdfIn PDF document text
    • https://legend-chang.com/UserFiles/files/kibezovigurojabaxewofoba.pdfIn PDF document text
    • http://koreadramatour.com/FileData/ckfinder/files/20211106_4127733B159319A9.pdfIn PDF document text
    • http://honghuibio.com/d/files/61937165327.pdfIn PDF document text
    • http://portalpr-b2b.es/img/user//file/_0499407001635206612.pdfIn PDF document text
    • https://on-call-anatomist.org/ckfinder/userfiles/files/14519212917.pdfIn PDF document text
    • http://lifecontinues.ru/images/files/befanalerufezajojoj.pdfIn PDF document text
    • https://ailani.org/wp-content/plugins/super-forms/uploads/php/files/8e9e5b5b7f298b773b343765311b4383/69874606593.pdfIn PDF document text
    • http://prabashproperties.com/ckfinder/userfiles/files/fusife.pdfIn PDF document text
    • https://zibarajabi.com/cache/fck_files/file/semedutoji.pdfIn PDF document text
    • https://foundryindia.org/userfiles/file/86971844196.pdfIn PDF document text
    • https://hopclickhospitality.com/scgtest/team-explore/uploads/files/kukusemasifevofudu.pdfIn PDF document text
    • https://realwebguys.com/wp-content/plugins/formcraft/file-upload/server/content/files/161a94f0808472---9440296381.pdfIn PDF document text
    • http://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/161493ee4971a4---81183200120.pdfIn PDF document text
    • http://feedproxy.google.com/~r/Xvkpad/~3/xPAns0MRe5M/uplcv?utm_term=university+calculus+early+transcendentals+3rd+edition+pdf+freePDF 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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024d26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x24D26 19812 bytes
SHA-256: 49dc63adddb6460ad01338b864cc8764bd4586567c435db6e3476db67c7330ce
font_01_sfnt_off000280ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x280EA 11072 bytes
SHA-256: e20af68197a610e305c139928ab6bc4df72fe05a21d155fd17e9ba1d8cbf37aa
font_02_sfnt_off00029af4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x29AF4 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336