Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd726c6308888d3b…

MALICIOUS

PDF

90.6 KB Created: 2021-08-05 15:07:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-18
MD5: d559804baf42a7d550c4c7e212e50540 SHA-1: 459068c9372fcdc4c6830e87b6babe409ee0b216 SHA-256: cd726c6308888d3b38e22b1182e1bbf830097446ebbe8e22ff0d7829371396d4
164 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9932

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 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://www.mnspineandsport.com/wp-content/plugins/super-forms/uploads/php/files/882d36605ef538dd0ed192b30e45b8c7/58714919729.pdf In PDF document text
    • http://lynxitservices.com/ckfinder/userfiles/files/zogariwofareb.pdfIn PDF document text
    • http://paykaaluminiya.ru/ckfinder/userfiles/files/70757838459.pdfIn PDF document text
    • https://lorenzonimmigrationlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c33bec05d40---10653588034.pdfIn PDF document text
    • https://landbondcorten.com/attachment/file/2217db6ef5fd93f4489ded9e46fc067b.pdfIn PDF document text
    • https://vmkstroi.ru/wp-content/plugins/super-forms/uploads/php/files/f71e1c947787c8008097f17db385e93c/goriv.pdfIn PDF document text
    • http://mfplus.ba/wp-content/plugins/formcraft/file-upload/server/content/files/16076f37eb2d10---87975597608.pdfIn PDF document text
    • http://www.siscard.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609fe06956c93---99341098262.pdfIn PDF document text
    • https://siphouse96.com/wp-content/plugins/super-forms/uploads/php/files/1c9ecfc8d496df35bd76461d1eaf203c/25130430585.pdfIn PDF document text
    • https://producedepot.us/userfiles/files/91958026711.pdfIn PDF document text
    • http://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b5e6a701097---vixevopi.pdfIn PDF document text
    • https://chptravel.ir/data/file/92175596375.pdfIn PDF document text
    • http://tkhomedeco.com/assets/uploads/ckedit/files/20210726113421.pdfIn PDF document text
    • https://infypos.com/infyposcms/media/wabafura.pdfIn PDF document text
    • http://ventima.ru/userfiles/file/45605935921.pdfIn PDF document text
    • http://gujaratbusinesspages.com/userfiles/file/97749761087.pdfIn PDF document text
    • http://dahchen.tw/userfiles/files/97190032429.pdfIn PDF document text
    • https://lentes123.com/aym_image/files/17980555409.pdfIn PDF document text
    • http://www.hkwebdesign.com.hk/wp-content/plugins/formcraft/file-upload/server/content/files/1607d5252f0a50---webejamepodika.pdfIn PDF document text
    • https://aldea.work/wp-content/plugins/super-forms/uploads/php/files/5d5dd687310d22f0840fcd12b3112f75/gotas.pdfIn PDF document text
    • https://priscar.com/documents/files/13209949344.pdfIn PDF document text
    • http://www.ddd-iasi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160baadffbbcea---81878654299.pdfIn PDF document text
    • https://rmissio.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1607f0ff954570---64156748168.pdfIn PDF document text
    • http://melissajacksonmd.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e3a4773cdc9---nevapawotetufarobaxixif.pdfIn PDF document text
    • http://vodnik48.ru/content/file/tujarupewubexexagaf.pdfIn PDF document text
    • http://mirandatutoringcentre.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1609a992bdc215---mojovazaf.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=ratatouille+full+movie+english+2007+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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fd05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD05 11292 bytes
SHA-256: c2861be14ad606bd564ca3d19ee7f561379ae9bf30aa1c69feb282f8061d248d
font_01_sfnt_off0001175d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1175D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00012f6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F6F 16920 bytes
SHA-256: e38081e4a5a2d3524813d9ee211ee83d2bbcd021cc70b0367a7ad4e52d1efdbb