Malicious PDF — malware analysis report

Static analysis result for SHA-256 489f6fbc7ee07997…

MALICIOUS

PDF

105.8 KB Created: 2021-07-01 12:25:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: dc116138536317ffd3c47b9d8a182180 SHA-1: 6613135ad8f1dfe497c1e48d4a73b4f3f1bdae95 SHA-256: 489f6fbc7ee07997134148e100db4b3eea0a5bd4778b082acc2ee6dd063bda68
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains numerous links to external websites, many of which are hosted on compromised CMS upload directories, suggesting a link farm designed to redirect users to malicious content. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly suggest it's designed to exploit vulnerabilities or lead users to phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9773

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://seataclightingalaska.com/wp-content/plugins/super-forms/uploads/php/files/2828c860626aa3910227ad51e0c31974/74005978329.pdf In PDF document text
    • https://provisionsinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/16089a182611d9---dilef.pdfIn PDF document text
    • https://ppuhperspektywa.pl/files/edytor/file/nawow.pdfIn PDF document text
    • https://advantagelic.com/singhania/downloads/file/waragag.pdfIn PDF document text
    • http://ar-intl.net/wp-content/plugins/super-forms/uploads/php/files/uvfq8q2rcdmb65r91ki1kas8r5/24973957559.pdfIn PDF document text
    • http://www.iqubz.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086eb0125cbb---99691827866.pdfIn PDF document text
    • https://www.cdscabling.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160c058ae77e1c---vabegofapebuve.pdfIn PDF document text
    • https://www.prowallpanama.com/wp-content/plugins/super-forms/uploads/php/files/6890af8d62cb21dae12361cd0f04f5c5/51647648807.pdfIn PDF document text
    • http://efuegypt.org/userfiles/file/gavewijasevel.pdfIn PDF document text
    • http://dangkyidol.com/wp-content/plugins/super-forms/uploads/php/files/tdpi1qvedc4mfbohqnn9l91kvt/44577370399.pdfIn PDF document text
    • http://ophtalmic-overnight.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1606d7eb0ae6a2---95037790487.pdfIn PDF document text
    • http://www.ecvbrass.ch/user/web/file/lanusikubemosi.pdfIn PDF document text
    • https://www.sevgiliyevideo.net/wp-content/plugins/formcraft/file-upload/server/content/files/160c1711bf0d68---60520911183.pdfIn PDF document text
    • https://www.hagensmarketing.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606fb9ffe9d22---safuxu.pdfIn PDF document text
    • https://agrotehholding.ru/wp-content/plugins/super-forms/uploads/php/files/f51145fda05da3f44a57c4d85e363845/47689347565.pdfIn PDF document text
    • http://krindustria.com.br/site/wp-content/plugins/formcraft/file-upload/server/content/files/160a85791d6928---susivaze.pdfIn PDF document text
    • https://theshairpodcast.com/wp-content/plugins/super-forms/uploads/php/files/0b8d9eddc83ff7235f3225b663fb742f/bavarefuwubilaved.pdfIn PDF document text
    • http://www.neslihanonur.com/wp-content/plugins/super-forms/uploads/php/files/013d66f23f3fc44f4b13d66314c1a8c3/kerupix.pdfIn PDF document text
    • http://spreewaldatelier.de/img/editor/file/83309019103.pdfIn PDF document text
    • https://greyquotient.com/wp-content/plugins/super-forms/uploads/php/files/e9b0247d0242bee85387dacd16b8e942/kuwopekukoboponom.pdfIn PDF document text
    • https://atraba-holding.com/userfiles/file/fumaxiresij.pdfIn PDF document text
    • https://lamaisonducoeur.ca/upload/editor/file/63220618878.pdfIn PDF document text
    • https://legouic-peinture.fr/userfiles/file/kekorutifebal.pdfIn PDF document text
    • https://borderpak.com/wp-content/plugins/super-forms/uploads/php/files/d220f6258246d3239bb062ce0a1e3301/sobolibix.pdfIn PDF document text
    • http://www.driftime.ee/wp-content/plugins/formcraft/file-upload/server/content/files/160baebb2769d0---waroxedoxevipitagema.pdfIn PDF document text
    • http://www.lbf-cosmetics.com/website/wp-content/plugins/formcraft/file-upload/server/content/files/160a3513f829e7---bomofam.pdfIn PDF document text
    • http://resortcrimea.com/ckfinder/userfiles/files/25828830429.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=praising+god+in+the+midst+of+trialsPDF 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_off00013b8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13B8A 10800 bytes
SHA-256: 8b3d104768ff7337b97484b18a2d2f1a64342f17b2f33499bd70c0528876b047
font_01_sfnt_off000153fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x153FB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00016c0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16C0D 17768 bytes
SHA-256: 1572b1b45812aca97cc5c0615a1e78436d23b1793b8a10c94a37ef9733298cd4

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