Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa872b41bcd4b978…

MALICIOUS

PDF

531.1 KB Created: 2022-02-01 06:27:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-06
MD5: cbee315f5caeb633afd2683491130de0 SHA-1: 58d1813de27a2eca3c4509430f58af111523f9fc SHA-256: aa872b41bcd4b9787d41c46d64f88cd67d2abd94c60484bc9d8241f64f91398f
144 Risk Score

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4865

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://yubit.co.za/XSRYdR1H?utm_term=eulogy+for+father+from+daughter+template PDF link annotation
    • http://mmckno2010.zkosuchdol.info/files/vulamoribakexajesavewo.pdfIn PDF document text
    • https://badeluxe.com/userfiles/files/pupuxefapexupil.pdfIn PDF document text
    • http://timnhanhonline.com/upload/files/depuzilafim.pdfIn PDF document text
    • http://urbanposthotel.com/admin/ckfinder/userfiles/files/55637995815.pdfIn PDF document text
    • http://www.fullmooneye.com/wp-content/plugins/formcraft/file-upload/server/content/files/161e7e11f87a29---zegujeduzikobovatu.pdfIn PDF document text
    • http://studiotecnicoprato.eu/userfiles/files/diwiper.pdfIn PDF document text
    • http://snabsz.ru/ckfinder/userfiles/files/surasenodibunu.pdfIn PDF document text
    • https://y3stwk65l-mn9.com/contents/files/81689809764.pdfIn PDF document text
    • https://procogs.com/FCKeditor/file/katatom.pdfIn PDF document text
    • http://lavender-farm.ro/app/webroot/js/kcfinder/upload/files/3681746352.pdfIn PDF document text
    • http://faithhh.net/js/kcfinder/upload/files/bituvuboroxop.pdfIn PDF document text
    • http://mojahotels.com/ckfinder/userfiles/files/51513602849.pdfIn PDF document text
    • https://abcelectricalonlineshop.brilliantwebtech.com/userfiles/files/furapobijakok.pdfIn PDF document text
    • https://korvioinfotech.com/ckfinder/userfiles/files/65674927135.pdfIn PDF document text
    • http://80tner.netsociality.com/upload/files/91407877030.pdfIn PDF document text
    • https://regalcabs.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16164bf8ab45eb---voxuwovumogotovufefibap.pdfIn PDF document text
    • http://vintagesilverrose.com/admin/ckeditor/kcfinder/upload/files/99513760909.pdfIn PDF document text
    • http://insuralead.com/userfiles/file/59490996343.pdfIn PDF document text
    • https://www.monacruises.com/html/scripts/ckeditor/kcfinder/upload/files/wukasexir.pdfIn PDF document text
    • https://akilanews.com/ckfinder/userfiles/files/24045065273.pdfIn PDF document text
    • https://hram-uspeniya.ru/ckfinder/userfiles/files/jolazesa.pdfIn PDF document text
    • https://sdhouse.info/ckfinder/userfiles/files/651588537.pdfIn PDF document text
    • http://modern-pro.ru/files/file/wiwewibalaf.pdfIn PDF document text
    • https://yourtuscanyguide.com/wp-content/plugins/super-forms/uploads/php/files/r8vegci1c33531i90fokur1vl0/mexagudowigadiruporopases.pdfIn PDF document text
    • http://es-umzuege-transporte.de/wp-content/plugins/super-forms/uploads/php/files/2028caac8ce8f7d3054d8f06bdf7448f/38324191703.pdfIn PDF document text
    • http://e-hematologica.com/users/file/3994960862.pdfIn PDF document text
    • http://cdmatik.com/uploads/file/29273583032.pdfIn PDF document text
    • http://maasmartcity.com/userfiles/file/99390777090.pdfIn PDF document text
    • http://ontheedgeofnow.com/wp-content/plugins/formcraft/file-upload/server/content/files/161b408a277fda---zasibisexozuwovoxu.pdfIn PDF document text
    • http://doicoffee.co.jp/js/kcfinder/upload/files/47443015461.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_off0007e202.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E202 10776 bytes
SHA-256: f846c7c06e6d7d01b2082c8c011f19e1e92c026a2bcd430197d51504cc2aef34
font_01_sfnt_off0007faad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FAAD 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_02_sfnt_off0008114c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8114C 17016 bytes
SHA-256: 2130b4ee3425b6c0d4ea03d7da56b0fb6fcd9c29297f8c4e6f4b4196d3b1f394