Malicious PDF — malware analysis report

Static analysis result for SHA-256 4456abdce3a409b5…

MALICIOUS

PDF

74.6 KB Created: 2021-09-16 08:01:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-11
MD5: 6c0262dae902463392684529d64cf21d SHA-1: 556c134308ce848fa767e716d7d68b0f835b005d SHA-256: 4456abdce3a409b59729258ff96347b8a811f310eba82fe4af6c862e58145173
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9840

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 https://krisoc.ru/uplcv?utm_term=1080p+black+panther+wallpaper PDF link annotation
    • https://lee-trading.tw/archive/upload/files/22933784871.pdfIn PDF document text
    • https://remoteyourstaff.com/calisma2/files/uploads/bemipigusezad.pdfIn PDF document text
    • http://discoveryenglish.org/wp-content/plugins/formcraft/file-upload/server/content/files/1613b394411518---14815910243.pdfIn PDF document text
    • http://mobilahomedesign.com/userfiles/files/tugirepawadebufemej.pdfIn PDF document text
    • http://generoussecurity.com/uploads/reseloname.pdfIn PDF document text
    • http://sloplast.com/userfiles/files/22405776846.pdfIn PDF document text
    • http://gardatrans.com/content/Files/19191788487.pdfIn PDF document text
    • https://www.businesswatchguardingservices.co.uk/wp-content/plugins/super-forms/uploads/php/files/umbvlm986bdevj8tjhmdpcth9a/27680561869.pdfIn PDF document text
    • https://sergiomauri.com/images/file/95867854371.pdfIn PDF document text
    • http://tsradviseurs.nl/mailing/images/photo/file/36813591879.pdfIn PDF document text
    • https://valve-toho.com/userfiles/file/mibabemovanipapozisezuj.pdfIn PDF document text
    • https://mobspace.xyz/web/img/podborky/files/jokawasigipijisejojubiwib.pdfIn PDF document text
    • http://trackeg.com/en/wp-content/plugins/formcraft/file-upload/server/content/files/1613ce45bbed23---71837386184.pdfIn PDF document text
    • http://beganijewellers.com/ckeditor/ckfinder/userfiles/files/xiguvola.pdfIn PDF document text
    • https://purefeeling8.com/data/file/xorijilefudufililumu.pdfIn PDF document text
    • http://studiodabo.eu/userfiles/files/59188267641.pdfIn PDF document text
    • http://old.smartplus.pl/ckfinder/userfiles/files/25686012303.pdfIn PDF document text
    • http://xn--dlek-5qa.com/admin/UserFiles/file/lobokuwodonepibedala.pdfIn PDF document text
    • https://groupburuemas1.com/contents/files/25133414019.pdfIn PDF document text
    • http://xn--80aafjbaeihgganggf9ajkncugh2a.xn--p1ai/pict/file/weranesidajumenutireje.pdfIn PDF document text
    • http://tucholainfo.pl/userfiles/file/kopilibetuwe.pdfIn PDF document text
    • http://www.peplex.it/wp-content/plugins/formcraft/file-upload/server/content/files/1613dbfc24c8e2---29425614501.pdfIn PDF document text
    • http://ruben.pl/ckfinder/userfiles/files/koxusupufita.pdfIn PDF document text
    • https://baigiangtoanhoc.com/upload/files/rarikamaraluvekikovadi.pdfIn PDF document text
    • http://loadcell.vn/Images_upload/files/demuzef.pdfIn PDF document text
    • http://copy-office.it/userfiles/file/vebokagigur.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_off0000c030.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC030 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000d847.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD847 10692 bytes
SHA-256: b89c968e87ab4164bc0ce6489cf791caaeb663776af2fa4daf0ef89146c493de
font_02_sfnt_off0000f0a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0A6 17112 bytes
SHA-256: babc82faab1e8c5b6ead596733015f4eaf7cd8ee6acfe004b6e753690e91d338