Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f31763c98cb761d…

MALICIOUS

PDF

426.4 KB Created: 2022-03-08 07:44:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-03
MD5: 96165930d010ba028b1deced661ec5d0 SHA-1: 9c4f3da10c6e500ed83ed2c8e52d31d24b722f91 SHA-256: 5f31763c98cb761d2c3f60e4e70ff4be7ac87ad930627186179a2206012dd51f
191 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.5194

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.
  • PDF advertises pirated movie streaming/download medium PDF_PIRACY_STREAMING_LURE
    PDF rendered text advertises free full-movie streaming or download using piracy-brand names or a 'full movie + download/free/watch' intent phrase — recovered after folding the styled Unicode confusables the campaign uses to hide those keywords from plain-text detection. These are disposable SEO-spam carriers that route users to malvertising, fake-player, and scam pages; the PDF itself is inert.
  • 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://www.bash.cl/media/file/5087766.pdf In PDF document text
    • https://jkmart.net/FCKFiles/File/44669192507.pdfIn PDF document text
    • http://madervaf.com/admin/kcfinder/upload/files/8591314356.pdfIn PDF document text
    • http://due.pt/js/ckfinder/userfiles/files/tasuvul.pdfIn PDF document text
    • http://gldbirdgel.com/user_img/files/15289745658.pdfIn PDF document text
    • https://iqmuseum.mn/uploads/files/jepoma.pdfIn PDF document text
    • http://autosoftware.company/autoresponders_images/files/21757750944.pdfIn PDF document text
    • http://studiotecnicoarduini.eu/userfiles/files/nozakarifiwimudad.pdfIn PDF document text
    • http://www.majbrno.cz/uploads/files/17030128467.pdfIn PDF document text
    • http://traviet36.com/upload/files/lozudopajojeros.pdfIn PDF document text
    • https://www.simcoerecovery.net/wp-content/plugins/super-forms/uploads/php/files/p08mkdfusdsk9h9h84t34beehm/lubefenudobetisin.pdfIn PDF document text
    • https://thenovgorodspaceship.andreirozen.com/images/files/86342416182.pdfIn PDF document text
    • https://planet-pvc.com/upload/files/66150922192.pdfIn PDF document text
    • https://plastr.cz/files/files/42451997915.pdfIn PDF document text
    • http://tradeweb.es/userfiles/file/27225119412.pdfIn PDF document text
    • http://www.lauricedale.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/161ff236361db3---11909684394.pdfIn PDF document text
    • https://cecinacuore.uplinkcrm.it/writable/public/userfiles/file/gebaremi.pdfIn PDF document text
    • http://shinhwajudan.com/userData/board/file/fixida.pdfIn PDF document text
    • http://famcareconnect.org/wp-content/plugins/formcraft/file-upload/server/content/files/16222c3d671285---72374738566.pdfIn PDF document text
    • http://yeke.com.tr/public/kcfinder/upload/files/pekasipojerokefetole.pdfIn PDF document text
    • https://xtrafitcoaching.com/www/images/files/ladakisak.pdfIn PDF document text
    • http://beautybybelief.com/admin/images/file/99630393095.pdfIn PDF document text
    • http://gibisch.biz/files/files/6522092252.pdfIn PDF document text
    • http://transfertrolley.cn/d/files/83113316395.pdfIn PDF document text
    • https://www.baptistenhardenberg.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1621187bf81322---861097177.pdfIn PDF document text
    • http://hyswimpool.com/userfiles/95075209040.pdfIn PDF document text
    • https://mkting.com.co/wp-content/plugins/super-forms/uploads/php/files/30e070f54e5a5e2aa9838c2459489c64/pulumepalamat.pdfIn PDF document text
    • https://personnelstrategies.net/userfiles/file/dimofo.pdfIn PDF document text
    • https://sieuthigo.vn/upload/ck/files/sabovabuzukawuvubobok.pdfIn PDF document text
    • https://medbillings.us/lightspeedweb1/file/21624274570.pdfIn PDF document text
    • http://mastrodibaglio.it/userfiles/files/juzixomib.pdfIn PDF document text
    • http://longarmquiltingacadamy.com/fckeditor/userfiles/file/zupipebudugivagenujitafiz.pdfIn PDF document text
    • http://deurenhanger.nl/userfiles/file/43350864113.pdfIn PDF document text
    • http://mesterteto.hu/userfiles/file/viwewovisuzojigoxupopufi.pdfIn PDF document text
    • https://agsposure.org/wp-content/plugins/super-forms/uploads/php/files/4fbc5fcf2771807b2d46bc891183f039/32852855807.pdfIn PDF document text
    • https://cafij.co.za/XSRYdR1H?utm_term=bounded+rationality+and+industrial+organization+pdfPDF link annotation
    • 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_off0006381b.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0006381b.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0006381b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6381B 18496 bytes
SHA-256: c27e8f8d27d7f3e835025f80f1ff45c61887073cf9ca7006ab4e87f5916b2ca8
font_01_sfnt_off000668b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x668B1 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off00067fd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67FD1 11000 bytes
SHA-256: c8a3076bc6d21b9c850f5925db095eaebfc51a0e4a256ce70afc522776d9a064