Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5d51b21f252c82a…

MALICIOUS

PDF

252.8 KB Created: 2022-03-17 18:57:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-28
MD5: f305abb4cf25804e42f2d583171d657b SHA-1: 8ad48aabb05867f16e0f0ea0f9261277822359dc SHA-256: c5d51b21f252c82a241d2926612bd9f347db053b9a1daef093d864f4cfaf2b99
174 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.5940

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://fecuq.co.za/XSRYdR1H?utm_term=citalopram+10mg+patient+information+leaflet PDF link annotation
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1622510e44b747---94688467189.pdfIn PDF document text
    • https://chiataiec.com/userfiles/Proj_Name/files/46393302161.pdfIn PDF document text
    • https://stillwaiting.org/userfiles/file/47307544275.pdfIn PDF document text
    • https://reflections-series.gilmorgenstern.com/userfiles/File/45322301943.pdfIn PDF document text
    • https://averakazan.ru/kcfinder/upload/files/ruvemunifovo.pdfIn PDF document text
    • http://onlinetalk.jp/app/webroot/img/fckfiles/file/89565902097.pdfIn PDF document text
    • http://schunk-app.com/js/kcfinder/upload/files/lalaxerovomedexezero.pdfIn PDF document text
    • http://ssss-sangam.com/userfiles/file/natitiwunimolazaran.pdfIn PDF document text
    • http://www.garriagricola.com/wp-content/plugins/formcraft/file-upload/server/content/files/1620d82b5ce72d---87853697682.pdfIn PDF document text
    • http://wecans.net/_UploadFile/Images/file/kubufuwazaduka.pdfIn PDF document text
    • http://miyisz.com/mingyi/images/userfiles/file/lidebatejusiwub.pdfIn PDF document text
    • http://xn--90ad5ackt1d.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/98bc80efbcea9c81f39c53245cc27f89/76477535124.pdfIn PDF document text
    • https://gabinetpro.pl/kosmetyczka/krakow/files/guranotepixo.pdfIn PDF document text
    • http://www.studiolegalefusimorelli.com/wp-content/plugins/formcraft/file-upload/server/content/files/162239218e41e9---walunofebivewaxetakatabav.pdfIn PDF document text
    • http://mh-gartengestaltung.de/userfiles/file/31691785351.pdfIn PDF document text
    • http://lamorenj.com/userfiles/file/99277273359.pdfIn PDF document text
    • https://www.corpeverest.com/ckfinder/userfiles/files/makijoxuwu.pdfIn PDF document text
    • https://limblength-sldf.fasamra.com/userfiles/file/25807181428.pdfIn PDF document text
    • https://merten-rozetki.su/kcfinder/upload/files/24730381234.pdfIn PDF document text
    • https://poornasreehomeoclinic.com/ckfinder/userfiles/files/wapajipenamusu.pdfIn PDF document text
    • http://positiveforce.in/uploads/files/46282324847.pdfIn PDF document text
    • http://www.kermaz.fr/js/kcfinder/upload/files/94783202854.pdfIn PDF document text
    • https://bukkosdiskola.hu/files/file/vifag.pdfIn PDF document text
    • http://parentini.it/userfiles/files/5556137602.pdfIn PDF document text
    • https://izharfoster.com/wp-content/plugins/formcraft/file-upload/server/content/files/16228fa176f754---8334545257.pdfIn PDF document text
    • http://autoshiftbid.com/fckeditor/userfiles/file/butuvajufutaloso.pdfIn PDF document text
    • https://unstitchedutilities.com/files/file/zedofuruxazizab.pdfIn PDF document text
    • http://simpelms.nl/userfiles/files/61873028923.pdfIn PDF document text
    • https://boulou.mrjean.fr/userfiles/file/56868804929.pdfIn PDF document text
    • http://konberdbio.com/upload/files/xulatisede.pdfIn PDF document text
    • http://unii-dz.org/app/webroot/js/kcfinder/upload/files/83239064286.pdfIn PDF document text
    • https://neipco.ir/data/file/viwovirexajikijobikijo.pdfIn PDF document text
    • http://grv.arq.br/admin/kcfinder/upload/files/nalusebulonelezaje.pdfIn PDF document text
    • https://regenerativetherapyforpain.com/wp-content/plugins/super-forms/uploads/php/files/ce2d8b68a442f8e435cd2bdd6d645ec5/sefefusomageponozebode.pdfIn PDF document text
    • http://rosspeed.com/kcfinder/upload/files/wajefifixebide.pdfIn PDF document text
    • https://afpf.emailingmanager.com/uploads/editor/file/62771021923.pdfIn PDF document text
    • https://astur.travelshops.pl/userfiles/file/89558371750.pdfIn PDF document text
    • http://kioskcondoweb.wpengine.com/wp-content/plugins/formcraft/file-upload/server/content/files/16217fd2a5ea92---fovidovaxizopukutifovif.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_off00038099.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x38099 19156 bytes
SHA-256: 523e408b03dce3cf7dee37f21f10d67f22744452f8e259ae4f5aa553653cbd87
font_01_sfnt_off0003b328.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3B328 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off0003ca48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3CA48 10736 bytes
SHA-256: 27229a8b3bb6270366f7e6ca88e2dd1fdd3c45b4c2b51abbead13d8140e2928f

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