Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd367b8f5dc81283…

MALICIOUS

PDF

110.6 KB Created: 2021-06-27 15:54:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 7a5e2d975a06611dd8bb0193c00b91a7 SHA-1: 8066cbf9ed2a0f42efff614e67c0f920db7da0cf SHA-256: bd367b8f5dc8128368d2660b094a914039c08e6a0e52594176d4db7430e76fde
156 Risk Score

Malware Insights

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

The PDF file contains numerous links, many of which point to compromised CMS upload directories and disposable hosting. These links likely serve as a link farm to distribute further malicious content, as indicated by the ClamAV detection and ML classifier flagging it as malicious. The primary function appears to be directing users to other malicious PDFs hosted on compromised websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9966

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://moon-villa123.com/CKEdit/upload/files/15188757062.pdf In PDF document text
    • http://www.northeastmarquees.com/wp-content/plugins/super-forms/uploads/php/files/56a60d2405c5131cd03dc23258d3aae5/pinilebabeviwod.pdfIn PDF document text
    • http://zap-interactive.com/uploads/files/kowiwiketikag.pdfIn PDF document text
    • https://singaporeroadshow.com/wp-content/plugins/super-forms/uploads/php/files/e307cd806f177299e964b9e16d3b8045/44136415760.pdfIn PDF document text
    • http://workprohealth.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ddc60634f9---bazodalijorezipesureru.pdfIn PDF document text
    • https://anzmrrn.org/wp-content/plugins/formcraft/file-upload/server/content/files/160adefe13dfba---wuxuxemuzexafolezawakelus.pdfIn PDF document text
    • http://atlantichomeportugal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609729265156d---59609278181.pdfIn PDF document text
    • http://coffee33.ru/archive/file/kebotozoxar.pdfIn PDF document text
    • http://akinmedikal.com/uploads/file/11287814017.pdfIn PDF document text
    • http://someteme.com/archivos/_20210623151454.pdfIn PDF document text
    • https://www.histoiresdegroupes.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079436f062a5---divotakagorokirenov.pdfIn PDF document text
    • https://www.ideaklinik.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c877326be1---xowisojukijipu.pdfIn PDF document text
    • https://studio45.live/wp-content/plugins/super-forms/uploads/php/files/f9fai6imb1qcqno1damn363cgc/zobenajozaxudivekimemo.pdfIn PDF document text
    • https://ddriu.hu/wp-content/plugins/super-forms/uploads/php/files/51672f59ce9a9b2b13f79ab7e70cb311/zevetilowudu.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160be65212425d---xexoxobexafuxuweto.pdfIn PDF document text
    • https://jamurgoreng.net/contents//files/sulajexevixegusegozapiv.pdfIn PDF document text
    • https://sdyh.gr/wp-content/plugins/super-forms/uploads/php/files/bjvp282l34e0lpn9b4v36rpgk3/kifakagenawolirowu.pdfIn PDF document text
    • http://julieesteban.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b955cc4372c---mulijozixa.pdfIn PDF document text
    • https://fullgame.hu/uploads/files/xejixanejizunenogurasa.pdfIn PDF document text
    • https://schlosshotel-murten.ch/userfiles/files/22543323242.pdfIn PDF document text
    • https://eclipsetheaters.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079baf93e5ea---53838220345.pdfIn PDF document text
    • https://funkydrop.shop/wp-content/plugins/super-forms/uploads/php/files/7be3234924acc1cd1d8b213aa738fa49/domelu.pdfIn PDF document text
    • https://www.die-umzugsfabrik.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c015f1c05b6---siluluroviruroti.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=cans+on+string+phonePDF link annotation
    • http://lovewhereyoulv.wpengine.com/wp-content/plugins/super-forms/uploads/php/files/f3771a2ce0721619156649fcb7b0bf2d/13285182569.pdfIn PDF document text
    • 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_off00014d2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14D2F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00016546.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16546 10516 bytes
SHA-256: 9914e13d47421af43d814d4873af9ff06564568aeee3ec0b5bf81439e3fded78
font_02_sfnt_off00017d31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17D31 18308 bytes
SHA-256: 1c4c4f45af99d76a69b082ca511e94c573ad54022fbc585b53b9adc6d36b1acd

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