Malicious PDF — malware analysis report

Static analysis result for SHA-256 706344dd1c2917c4…

MALICIOUS

PDF

90.8 KB Created: 2021-06-27 15:47:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: b459181a3ea1ad94c3d7c5b27e3a35be SHA-1: 9f10e87a678c604c04cb0b98de9e7902ac247197 SHA-256: 706344dd1c2917c444e71d3c617e6153207cd0a6787d48bfeb2fb12fc4e7a63e
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous embedded URLs, many pointing to compromised WordPress sites, suggesting it's part of a link farm designed to redirect users to malicious content. The presence of external URI heuristics and link farm indicators strongly suggests a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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://medvor.ru/uplcv?utm_term=nonfiction+book+summary+template PDF link annotation
    • https://bykevin.com/wp-content/plugins/super-forms/uploads/php/files/be5e47c73382b4eb7a4f293421031c71/14834976247.pdfIn PDF document text
    • http://xinyaoqiye.com/upload_fck/file/2021-6-24/20210624120950507831.pdfIn PDF document text
    • https://bhsbeacon.com/FCKeditor/file/zubozunavidibogufut.pdfIn PDF document text
    • https://www.grecosalesinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080fd7274f89---76532081894.pdfIn PDF document text
    • http://discoveryenglish.org/wp-content/plugins/formcraft/file-upload/server/content/files/16096e8429587e---wuwapedobasoz.pdfIn PDF document text
    • https://sweetestspaparty.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d2461dcbcd---45939451191.pdfIn PDF document text
    • https://ivfnna.gr/wp-content/plugins/super-forms/uploads/php/files/f4a99bc99d82e74ff60f7ca2e3118b81/36451397339.pdfIn PDF document text
    • https://etcbt.com/userfiles/file/fekalido.pdfIn PDF document text
    • https://blackknowledge.com/wp-content/plugins/super-forms/uploads/php/files/f8f8cd19b118ca9219815d35303efac9/36267437283.pdfIn PDF document text
    • http://uctodane.cz/UserFiles/File/4973146032.pdfIn PDF document text
    • http://www.garriagricola.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c62e8698a7a---berigaxodugubabas.pdfIn PDF document text
    • http://magooferta.pl/uploads/fck/file/xupariwemibamivemijake.pdfIn PDF document text
    • https://www.crossfitparamaribo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d427696a99---xejudekuvuzagiroxib.pdfIn PDF document text
    • https://earthideasawnings.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a502c67565a---jagolimokovezijegizumod.pdfIn PDF document text
    • http://ildungrice.com/fileupload/fckeditor/file/74304487613.pdfIn PDF document text
    • http://www.davidwoodpersonnel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f0ed22a025---wokax.pdfIn PDF document text
    • https://www.hotelamoha.it/wp-content/plugins/formcraft/file-upload/server/content/files/1608dd74721fc7---24040730888.pdfIn PDF document text
    • https://maydongy.com/wp-content/plugins/super-forms/uploads/php/files/u21dphg8591lrh3sacc0j4dgg2/tedoj.pdfIn PDF document text
    • https://him-home.ru/wp-content/plugins/super-forms/uploads/php/files/cbd75944290f7b49502dbacfa0dedfdf/36695570944.pdfIn PDF document text
    • https://akdenizokullari.k12.tr/wp-content/plugins/super-forms/uploads/php/files/e8pklu5kamuhafp3lo46de4huj/fibanotejekom.pdfIn PDF document text
    • http://az4group.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160aa66f0bf2e2---kegobamezidabidepow.pdfIn PDF document text
    • http://qytbearing.com/upfile/file/32472309922.pdfIn PDF document text
    • https://glasschneider.koeln/wp-content/plugins/super-forms/uploads/php/files/nkgdvkdlvfeq48u0t2pmpr5r55/81366287307.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_off0000fe58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE58 17572 bytes
SHA-256: a10210fe952965ebd2c214a3d88f791809af46ffbf19b1b3988041a72b63648a
font_01_sfnt_off00012c41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12C41 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00014458.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14458 11064 bytes
SHA-256: 58161809470f9993e99424a8579b199b5f5f08dc2b6a8a650a8eb723c5fbca2f

Open this report in the interactive analyzer, or submit your own file for analysis.