Malicious PDF — malware analysis report

Static analysis result for SHA-256 55293b80e85a1cf0…

MALICIOUS

PDF

362.0 KB Created: 2022-03-16 08:19:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-19
MD5: 281a2ee6c1a6ffafaa078043d33ae323 SHA-1: 2cea2fbaee70a64576b60323626e45ec256e1cf2 SHA-256: 55293b80e85a1cf047d1b87ca82294d3e59a20212cea40480b52403cd8f24370
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6257

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 http://stellar-toys.com/ckfinder/userfiles/files/30804920991.pdf In PDF document text
    • http://www.shipsupply.co.mz/wp-content/plugins/formcraft/file-upload/server/content/files/16206d715b7841---zegugapimulu.pdfIn PDF document text
    • http://about-dogs.ru/upload/file/55624724962.pdfIn PDF document text
    • http://kavernoklub.com/campannas/file/lixom.pdfIn PDF document text
    • https://www.coopi.org/admin/assets/js/ckeditor/kcfinder/upload/files/files/zotetemisiradumit.pdfIn PDF document text
    • http://legrand-valena.su/kcfinder/upload/files/70920831539.pdfIn PDF document text
    • https://minhgianggroup.vn/upload/files/75225904899.pdfIn PDF document text
    • https://chungangroup.com/uploads/files/202202192004224778.pdfIn PDF document text
    • http://anton-joyeros.shopcloud.es/ckfinder/userfiles/files/fufazunezakuli.pdfIn PDF document text
    • http://acmemask.com/upfiles/editor/files/lebexiwuza.pdfIn PDF document text
    • https://www.getfitcrew.com/wp-content/plugins/formcraft/file-upload/server/content/files/1622b0c5cb4a18---690068818.pdfIn PDF document text
    • https://www.nhabe.com.vn/ckfinder/userfiles/files/50721824524.pdfIn PDF document text
    • http://www.juthamasclinic.com/upload/finder/files/fewuxunasobijopunojegufil.pdfIn PDF document text
    • http://yingtailong.com/upload/file/220225092859706291fne09gv7v9ap.pdfIn PDF document text
    • https://themarketlook.com/assets/ckfinder/core/connector/php/uploads/files/87518774756.pdfIn PDF document text
    • http://rosesrealtyhomes.com/userfiles/files/boxaninumagexa.pdfIn PDF document text
    • http://www.myhhsi.com/wp-content/plugins/super-forms/uploads/php/files/c8c510459168c6ede2f7d5af3dc554cb/rodunowurow.pdfIn PDF document text
    • http://fantalife.nl/userfiles/file/nagadinelanepibagirafufo.pdfIn PDF document text
    • http://terabim.com/userfiles/file/xiwanag.pdfIn PDF document text
    • http://kifei.ru/files/files/53991617194.pdfIn PDF document text
    • https://dispomydeal.com/wp-content/plugins/super-forms/uploads/php/files/ad9eead258892fe0df9c73ef86837fb4/zovakol.pdfIn PDF document text
    • http://dreamcatcherltd.com/userfiles/file/60135909626.pdfIn PDF document text
    • http://www.asbea.org.br/assets/plugins/kcfinder/upload/files/81918884133.pdfIn PDF document text
    • http://sitarofindiamd.com/userfiles/file/59380636908.pdfIn PDF document text
    • https://torreguitart.cat/fotos/subidas/files/bedepedibuduvuti.pdfIn PDF document text
    • https://interativacorretora.com/fotosempresa/files/28284081008.pdfIn PDF document text
    • http://sjhtractor.com/d/files/jofamiba.pdfIn PDF document text
    • http://bwa.olsztyn.pl/bwa3/admin/kcfinder/upload/files/supamotojupa.pdfIn PDF document text
    • https://paceelectric.com/new2/userfiles/file/82161763914.pdfIn PDF document text
    • http://www.ddu-hk.cz/ckfinder/userfiles/files/nimogavabewelusu.pdfIn PDF document text
    • https://motiwalainstitutes.org/userfiles/file/kamedenu.pdfIn PDF document text
    • https://www.3dreamchurch.com/wp-content/plugins/super-forms/uploads/php/files/8932835fed4161b1f7055ef95d7a50f0/tadoj.pdfIn PDF document text
    • https://zerling.eu/nico/images/files/resazixigifit.pdfIn PDF document text
    • https://brillimet.com/uploads/files/202203030827261511.pdfIn PDF document text
    • https://s-h.cc/uploads/files/202203110746092649.pdfIn PDF document text
    • https://colod.co.za/XSRYdR1H?utm_term=incurred+but+not+reported+definePDF link annotation
    • http://prplus4u.com/ckupload/files/83368551985.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 extracted file (font_00_sfnt_off000531fe.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off000531fe.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000531fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x531FE 10428 bytes
SHA-256: ea744ae22f67926c56db3ec51c288bf7150b3f0112c86a80c5515dbfee35389b
font_01_sfnt_off00054973.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x54973 20384 bytes
SHA-256: 3ac62317575eccdb4768f7f136b18ce7fef1ee2a57240b2c948d4f2ca1e407de
font_02_sfnt_off00057f91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57F91 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9