Malicious PDF — malware analysis report

Static analysis result for SHA-256 6fb593e7db8270e9…

MALICIOUS

PDF

92.2 KB Created: 2021-07-05 00:47:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: f4e8fa95856e96f5a383358374c09e87 SHA-1: 2abbca065d9b7ea866e32e9c38202c91601d8e7d SHA-256: 6fb593e7db8270e91e50cbb6c0cc33de25f9478d0c0e8da4ff0021793b0b52a7
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan payload. The document contains a link farm pointing to multiple compromised WordPress sites, likely serving as a distribution point for further malicious content. The presence of a 'download button' heuristic further supports the lure-based attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9806

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://ecomassage.pt/wp-content/plugins/super-forms/uploads/php/files/3taiciti8rdp8n2q2jckfcfshs/xoxevexesuzaror.pdf In PDF document text
    • https://feltshoe.com/userfiles/file/68203223422.pdfIn PDF document text
    • http://studiopignotti.it/userfiles/files/8116695220.pdfIn PDF document text
    • http://yossy.biz/userfiles/file/vasebuvofesavubijadamow.pdfIn PDF document text
    • https://eatorhours.org/e-bussiness/fckimages/file/92701960057.pdfIn PDF document text
    • http://brodart01.com/wp-content/plugins/super-forms/uploads/php/files/ms231k8bl11eiu4fegai90ilfc/zujololopimidikidaba.pdfIn PDF document text
    • http://www.farparts.cl/wp-content/plugins/formcraft/file-upload/server/content/files/1607d700301fb6---nolil.pdfIn PDF document text
    • https://svrcontractors.com/wp-content/plugins/super-forms/uploads/php/files/5c6e285a2744600d232998c7acca9b33/68936809141.pdfIn PDF document text
    • http://barudan.hk/UploadFile/file/20210618092824047.pdfIn PDF document text
    • http://www.lugashotel.com/data/editorfile/96805826529.pdfIn PDF document text
    • https://heykidsletscook.info/wp-content/plugins/super-forms/uploads/php/files/caa76c0bb649b8f3b5976e811c94b8c7/26244115505.pdfIn PDF document text
    • https://amirep.com/wp-content/plugins/super-forms/uploads/php/files/571cb5fb462df357027fdc4bf298c176/10258412763.pdfIn PDF document text
    • https://christembassyromford.org/wp-content/plugins/super-forms/uploads/php/files/d58a38c3a86eaf5d2639b4292e3d9a9f/98677628456.pdfIn PDF document text
    • https://acgroupenterprise.com/userfiles/file/23058911810.pdfIn PDF document text
    • https://flardochform.se/userfiles/file/bidisafepawikizel.pdfIn PDF document text
    • https://moniimpex.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ba4d71d764d---84327647222.pdfIn PDF document text
    • https://webtraffic.ch/wp-content/plugins/super-forms/uploads/php/files/bsujcdhr66bqgif8974gqcrsrm/87280085532.pdfIn PDF document text
    • https://ilc.ua/wp-content/plugins/super-forms/uploads/php/files/1v0vh4uj67thqv9rso2mqiv7b1/66593225739.pdfIn PDF document text
    • http://witnesstherealist.com/wp-content/plugins/super-forms/uploads/php/files/5f124ff2e6f221c17d5ee84a6da7ab4d/nubugozomaxaxonow.pdfIn PDF document text
    • https://sevsport.info/wp-content/plugins/super-forms/uploads/php/files/c597f1e2676e91b7dd7e76f448007799/26814660366.pdfIn PDF document text
    • http://bendhorseride.com/userfiles/file/48767048479.pdfIn PDF document text
    • https://californiaoptionsrealestate.com/wp-content/plugins/super-forms/uploads/php/files/88b11c5d6678c92386c30d2968c51bcd/25491377336.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083ebbe757b7---55418863156.pdfIn PDF document text
    • https://urbanlivin.lu/userfiles/files/24841228372.pdfIn PDF document text
    • http://ifaistos.reality.gr/~triantaf/images/file/nodaxaboriw.pdfIn PDF document text
    • https://binarbaidtrading.com/public_html/userfiles/file/tanilixazawebot.pdfIn PDF document text
    • http://bioident.pl/photos_fck/file/27421963958.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/S30rS-6n6vg/uplcv?utm_term=the+best+sims+4+cc+websitesPDF 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_off000107a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107A0 17120 bytes
SHA-256: 07cf85b44602b40434f658c8160d9530cf4da2863e11f1adcce30e7f655f7ff0
font_01_sfnt_off0001342c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1342C 10228 bytes
SHA-256: 366896c5f56dd85783b2327ec2591cfd24ec70315006eaecdd6f8207c87e70de
font_02_sfnt_off00014b47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14B47 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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