Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e390dc57cae778b…

MALICIOUS

PDF

199.6 KB Created: 2022-04-29 05:50:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-19
MD5: 795e4d57615ca7c82cccb8a334601298 SHA-1: 2eae4b442a13ceb0030b3350cd3f9eabf252f022 SHA-256: 4e390dc57cae778b1b5275f24595455d5cc81c3837802e924c4a3dddd61ac4db
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6800

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://wirut.co.za/XSRYdR1H?utm_term=logic+questions+with+answers+tagalog+math PDF link annotation
    • http://ns1.constantcontinuity.com/membership/data/files/15164228842.pdfIn PDF document text
    • http://szpk.hu/_user/file/pemutexubipezebedagisisov.pdfIn PDF document text
    • https://shastriratanchatterjee.com/ckfinder/userfiles/files/zigozidiniva.pdfIn PDF document text
    • https://aanzet.ccinteractive.nl/nieuwsbrieven/berichten/31877652569.pdfIn PDF document text
    • http://egresiangus.com/admin/kcfinder/upload/files/38629150836.pdfIn PDF document text
    • http://alseera.com/admin/kcfinder/upload/files/losotatuv.pdfIn PDF document text
    • http://suliaok.com/v15/Upload/file/20222191247196416.pdfIn PDF document text
    • https://licensing-centre.poweredbypaf.com/files/9265521742.pdfIn PDF document text
    • https://www.cultureowl.com/kcfinder/upload/files/biziratefo.pdfIn PDF document text
    • https://listocrm.com/userfiles/files/pokotudixovemuxos.pdfIn PDF document text
    • http://poncocontracting.com/userfiles/file/6113186583.pdfIn PDF document text
    • http://becucci.it/userfiles/files/lolatugonopetisozut.pdfIn PDF document text
    • https://jazykovytabor.topenglish.sk/app/webroot/gallery/files/26758345334.pdfIn PDF document text
    • http://proximeo.com/ckfinder/userfiles/files/22272832367.pdfIn PDF document text
    • http://marsanz.pl/uploads/fck/file/duporagirenuxuba.pdfIn PDF document text
    • http://undergroundspitters.nl/kcfinder/upload/files/lomaburigiwamizezilufixu.pdfIn PDF document text
    • https://semineebrasov.ro/printuri-fi/files/12515956505.pdfIn PDF document text
    • http://casaledellasignora.it/userfiles/files/88671938954.pdfIn PDF document text
    • https://aguiapromocional.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1626ac6a00dd89---6072123163.pdfIn PDF document text
    • https://textosolutionslinguistiques.com/upload/editor/file/73884747192.pdfIn PDF document text
    • http://clerus.hu/files/file/35597553313.pdfIn PDF document text
    • http://tiquital.com/documentos/file/tuvirokuzu.pdfIn PDF document text
    • http://cudicio.it/images/file/mobina.pdfIn PDF document text
    • https://sssmri.com/ckfinder/userfiles/files/vibajexi.pdfIn PDF document text
    • http://laconchigliacasevacanze.it/userfiles/files/78594609256.pdfIn PDF document text
    • http://entone.es/wp-content/plugins/super-forms/uploads/php/files/381c186455dcb93f07d5553a7e01fe09/7214011202.pdfIn PDF document text
    • http://cdkuysuujk.handysociality.com/upload/files/91654182432.pdfIn PDF document text
    • http://kanoonkaraj.ir/dbmanager/filebank/htmlgallery/file///vaxarabexiwubotagil.pdfIn PDF document text
    • http://xn--80akij1ajew.xn--p1ai/wp-content/plugins/formcraft/file-upload/server/content/files/161fe78e54f1e1---75443657374.pdfIn PDF document text
    • http://benjapakee.net/UserFiles/File/pagumapoxurorodudufosek.pdfIn PDF document text
    • https://sahyadrisevasanstha.in/userfiles/file/82090059334.pdfIn PDF document text
    • http://arcenevents.nl/site/upload/files/74882213550.pdfIn PDF document text
    • https://www.dogandemir.av.tr/paketler/ckfinder/dosyalar/files/55905767021.pdfIn PDF document text
    • https://www.mountainhawktrek.com/assets/kcfinder/upload/files/matixaxawiz.pdfIn PDF document text
    • http://tndgdemo2.com/ckfinder/userfiles/files/kutokolipadabud.pdfIn PDF document text
    • http://aan.kz/ckfinder/userfiles/files/sutatajetuzivabusov.pdfIn PDF document text
    • http://vnpt247.com/ckeditor/kcfinder/upload/files/debulopotasopuvoter.pdfIn PDF document text
    • https://aravalivssamiti.org/admin/assets/ckeditor/kcfinder/upload/files/bedepabosokoru.pdfIn PDF document text
    • http://ipayon.com/root/FCKeditor/file/wetulelepewometimu.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_off0002acd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2ACD5 10964 bytes
SHA-256: 8f309ed6f9832afb64287400552b369b4835a61568297e8e2dba671da978a820
font_01_sfnt_off0002c5d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C5D8 18824 bytes
SHA-256: 6597aaac60d3142424aabd124e80c711e8227c6a99aace8f79d9fd15fdf73f91
font_02_sfnt_off0002f604.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F604 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1