Malicious PDF — malware analysis report

Static analysis result for SHA-256 bda824221833684d…

MALICIOUS

PDF

92.0 KB Created: 2021-06-29 05:49:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 93038be367d88dbb6afa1086683610a5 SHA-1: a2b7c6a35e73105c021764b19c61b45365bb786c SHA-256: bda824221833684da235a5f657795351fa67ab54b732cf6e15c3b7bac2fde8af
156 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to compromised WordPress sites, suggesting a link farm designed to lure users to malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. No scripts were extracted, but the structure and URL targets are indicative of a phishing or credential harvesting 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://mission4recruitment.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c505ae54639---9733596922.pdf In PDF document text
    • http://www.kevinbrooks.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160885f04c0f6a---38620939971.pdfIn PDF document text
    • https://ppuhperspektywa.pl/files/edytor/file/37009261012.pdfIn PDF document text
    • https://g-ortho.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607322f1d1233---surime.pdfIn PDF document text
    • http://angelescare.com/userfiles/file/zagejajoradonegusikuvan.pdfIn PDF document text
    • https://pmeds.us/userfiles/file/70559031441.pdfIn PDF document text
    • https://www.emmabowman.com/wp-content/plugins/super-forms/uploads/php/files/e4314521e195907831c83c639889e296/tuveto.pdfIn PDF document text
    • http://baliretreatcenter.com/olabali_ci/media/images/newsfiles/71237419703.pdfIn PDF document text
    • http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/160846b23dc368---39419107080.pdfIn PDF document text
    • https://vuaship.com/wp-content/plugins/super-forms/uploads/php/files/gk306trlmjjp6caho4j6golrqq/fukubokumaga.pdfIn PDF document text
    • https://ailani.org/wp-content/plugins/super-forms/uploads/php/files/15c28b9faa5966e97091ce78aca82e95/66653967091.pdfIn PDF document text
    • http://omniatel.it/wp-content/plugins/formcraft/file-upload/server/content/files/160768b52583b2---pikuditilafofabisodigowi.pdfIn PDF document text
    • https://www.amiunaorchestra.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16072435dad30c---vikerirelunefiw.pdfIn PDF document text
    • http://english-life.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16072cbee8ef8b---kudowikiveponebuso.pdfIn PDF document text
    • http://ophtalmic-overnight.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1607b9dcd5e0c5---81306894728.pdfIn PDF document text
    • http://www.icodar.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a67d68bef80---mikabela.pdfIn PDF document text
    • http://ressourcengarten.de/azubi/userfiles/files/xopixegu.pdfIn PDF document text
    • https://asiajitu.com/contents//files/wogav.pdfIn PDF document text
    • http://call.ae/wp-content/plugins/formcraft/file-upload/server/content/files/160879b20c4f08---tajomi.pdfIn PDF document text
    • https://humantouchtranslations.com/wp-content/plugins/formcraft/file-upload/server/content/files/1/160be94b5ae876---91431302750.pdfIn PDF document text
    • http://www.platformliften.info/wp-content/plugins/formcraft/file-upload/server/content/files/160ab89f07c2d5---92521206762.pdfIn PDF document text
    • https://zegabilisim.com/calisma2/files/uploads/pakurazi.pdfIn PDF document text
    • http://austria-ex.com/images/blog//file/30940274987.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=spider+man+ultimatePDF 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_off00010693.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10693 17048 bytes
SHA-256: 6b73efefc7737317f6a1aab230529670444236520c489b8e7082d82a33ffd99f
font_01_sfnt_off00013303.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13303 10440 bytes
SHA-256: 7b86fe2b3eab6c29c2a0acba2e1f37a871661575b7229eef8d6cd47dabf7e274
font_02_sfnt_off00014aa4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14AA4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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