Malicious PDF — malware analysis report

Static analysis result for SHA-256 4af6be5be0f13851…

MALICIOUS

PDF

290.4 KB Created: 2022-03-16 17:48:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-06
MD5: aec4a88ef5a9e37cb1ad843b03f4af78 SHA-1: 0ef24d687af058bfb6f4700ea13fbb109d77c674 SHA-256: 4af6be5be0f138514e0456b4a4eaf0f868de1a95a11f052658dafb0dcc61c393
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6855

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
  • 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.
  • 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://sunuf.co.za/XSRYdR1H?utm_term=alesis+3630+service+manual PDF link annotation
    • http://spasm-sympo.org/uploads/ck/admin/files/sijon.pdfIn PDF document text
    • https://www.takaotakano.com/kcfinder/upload/files/66653471196.pdfIn PDF document text
    • https://chocoinmobiliario.com/wp-content/plugins/super-forms/uploads/php/files/a9ef3f212c03ee7c3f80a039a8d3da11/1110191150.pdfIn PDF document text
    • http://philippetardieu.com/kcfinder/upload/files/58279949643.pdfIn PDF document text
    • http://www.eatvirukai.lt/uploads/files/66142136668.pdfIn PDF document text
    • http://krakow4you.pl/krakow/files/sazop.pdfIn PDF document text
    • https://pensiunea-escape.ro/ckfinder/userfiles/files/40361727185.pdfIn PDF document text
    • https://g-ortho.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1621b7aceddcae---84662894770.pdfIn PDF document text
    • https://bhiringisamsankalimandir.org/userfiles/file/82395072088.pdfIn PDF document text
    • http://mayinmaunhat.com/upload/files/98844425042.pdfIn PDF document text
    • https://stomatoloska-ordinacija-rijeka.com/files/53668581113.pdfIn PDF document text
    • https://www.silverskilled.com/gateway/kcfinder/upload/files/96578319473.pdfIn PDF document text
    • http://anaheim81.com/kcfinder/upload/files/peviwati.pdfIn PDF document text
    • http://pbwi.com.pl/admin/kcfinder/upload/files/59701014556.pdfIn PDF document text
    • https://accu-split.com/userfiles/files/mubumonukobakof.pdfIn PDF document text
    • http://kbcsisa.com/upload/fckeditor/file/25548598467.pdfIn PDF document text
    • http://www.kizkulesikizogrenciyurdu.com/public/ckfinderuploads/files/4047995762.pdfIn PDF document text
    • https://aceold.lrsinc.co/userfiles/file/texagufokuwajupe.pdfIn PDF document text
    • http://vizitcard.kz/uploads/files/bosiposet.pdfIn PDF document text
    • http://www.praasia.com/file/files/3972681246.pdfIn PDF document text
    • http://cottoneauto.it/userfiles/files/17441410036.pdfIn PDF document text
    • https://www.nasasquirrel.org/kcfinder/upload/files/74384478781.pdfIn PDF document text
    • http://circolonauticofavignana.it/userfiles/files/sipolapamum.pdfIn PDF document text
    • http://www.guaitoli.eng.br/wp-content/plugins/formcraft/file-upload/server/content/files/1621dd2b6bdb39---pobemedebeto.pdfIn PDF document text
    • http://americansemitruckparts.com/d/files/raviluraleber.pdfIn PDF document text
    • https://xlquality.com/userfiles/file/bosime.pdfIn PDF document text
    • https://mindtrainingsystems.com/userfiles/file/94679608809.pdfIn PDF document text
    • https://paklya.su/design/img/upload/file/42191821755.pdfIn PDF document text
    • http://www.scmphotography.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/162051d4b0c0a5---fazovipib.pdfIn PDF document text
    • http://mamtomchabahai.com/uploads/files/files/rifevepefetefup.pdfIn PDF document text
    • https://beds.lifelinecenters.com/news_items/file/79714809452.pdfIn PDF document text
    • https://semineebrasov.ro/printuri-fi/files/3260915833.pdfIn PDF document text
    • https://balajihighfields.in/userfiles/file/begumuzesagob.pdfIn PDF document text
    • https://samirkumarpaul.com/ckfinder/userfiles/files/36282834257.pdfIn PDF document text
    • http://agriturismoilnoceto.com/userfiles/files/5176942165.pdfIn PDF document text
    • http://davostravel.com/upload/files/52535428569.pdfIn PDF document text
    • http://manilag.com/FileData/ckfinder/files/20220305_18AC5F71BF999308.pdfIn PDF document text
    • https://yun2u.com/upload/files/tutixabelakazosuxekexi.pdfIn PDF document text
    • http://grabnerestriche.at/55428502095.pdfIn PDF document text
    • http://chinahk-ip.com/chinahk_ip/html/files/editor/file/33918794853.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_off00041278.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x41278 10780 bytes
SHA-256: 37d7e59265e26064d68d22c7dac7684194e09640bef2499297e455e387cfc2f5
font_01_sfnt_off00042b54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x42B54 20344 bytes
SHA-256: c4148d01e2730f6273c9684852e0f3ba0291e2b152eb25ca66531b86b83726ab
font_02_sfnt_off00046144.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x46144 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9