Malicious PDF — malware analysis report

Static analysis result for SHA-256 4783aab4a1d59b2e…

MALICIOUS

PDF

62.8 KB Created: 2021-06-23 22:49:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-20
MD5: d4d23c28b064a9405ce64f7b2572ef1a SHA-1: c8fc296daaad1e1d26635d25b9a475e560aa2825 SHA-256: 4783aab4a1d59b2ecbd40939a6d9258ae9e51690e22ab8f0d168bd1c656f085a
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://www.mysmilestudios.com/wp-content/plugins/super-forms/uploads/php/files/7023e6518b76449737751b5aad12a7b8/6776554505.pdf In PDF document text
    • https://deewo.de/wp-content/plugins/formcraft/file-upload/server/content/files/160cc2a56b6842---86429781605.pdfIn PDF document text
    • http://makinsushi.com/uploads/files/9049697339.pdfIn PDF document text
    • https://accuratesearch.com/userfiles/file/58252521529.pdfIn PDF document text
    • http://insidethedigitaltrend.biz/userfiles/file/34492169318.pdfIn PDF document text
    • https://koetec.com/home/~ptow/public_html/ckfinder/userfiles/files/30298586011.pdfIn PDF document text
    • https://cowichanseniors.ca/userfiles/file/7948781942.pdfIn PDF document text
    • http://www.kreasoft.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160c6ca4a3669e---kojusobivizexokow.pdfIn PDF document text
    • https://bestmiamiturf.com/wp-content/plugins/super-forms/uploads/php/files/3d2dc4c8bbf927d2728036426c74d489/rinunin.pdfIn PDF document text
    • https://mediabandit.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ca6c8486079---joliwa.pdfIn PDF document text
    • https://shrmivirtual.org/wp-content/plugins/super-forms/uploads/php/files/0600aa8a483308ab75c369398b3a57e4/92765186920.pdfIn PDF document text
    • https://kalatranslation.co.uk/wp-content/plugins/super-forms/uploads/php/files/dh7g2o7jc3re6v1fpfrftq6li7/18991763506.pdfIn PDF document text
    • https://primeodontorj.com/wp-content/plugins/super-forms/uploads/php/files/2769f6b19b57690df0c88527528fadb0/43692856727.pdfIn PDF document text
    • https://action-roofing.com/wp-content/plugins/super-forms/uploads/php/files/d6a06f7e59f1c832a74958e8eedb806f/detudowotegem.pdfIn PDF document text
    • http://poetische-malerei.de/web/editor/files/bokimijonasijutu.pdfIn PDF document text
    • http://meadescafe.com/userfiles/file/tuxivakediriduduluxom.pdfIn PDF document text
    • http://aceonlinementors.com/userfiles/file/jirululesawawovatopi.pdfIn PDF document text
    • http://makaifruits.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608e9eccefd95---takunabowivozegexe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/A3Ryygt5BCM/uplcv?utm_term=patologia+estructural+y+funcional+robbins+8+edicion+pdfPDF 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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b3f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB3F2 5760 bytes
SHA-256: c2c62a18f9b9a7cdba1bf6b7f95f24192c2ef5ec6a492298cbd5e113a63cd7d3
font_01_sfnt_off0000c7a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7A3 11076 bytes
SHA-256: f1dd07c3d89f89d15ca8804508d50676036a784ea47ad4dd6c8b1cd02586a5b9

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