Malicious PDF — malware analysis report

Static analysis result for SHA-256 18ab871c86dee445…

MALICIOUS

PDF

422.4 KB Created: 2022-03-07 15:29:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-09
MD5: 4b8134dcbdcccb742b11139c93b7c034 SHA-1: a320b6082f931129abe303a9ff269cfddcbed60d SHA-256: 18ab871c86dee445585362afd019ca05622bb5e7fa7af5577196f4017e297c32
191 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.5015

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://tsyrulnikov.ru/upload/file/gopojunogomepad.pdf In PDF document text
    • https://soportedevida.mx/ckfinder/userfiles/files/20265596492.pdfIn PDF document text
    • http://callbells.com.ua/kcfinder/upload/files/54324142578.pdfIn PDF document text
    • http://ndt-ultratech.com/files/20574003901.pdfIn PDF document text
    • http://fkm-lux.by/var/upload/file/48072045350.pdfIn PDF document text
    • https://nghiepvu.udicmanpower.vn/uploads/news_file/suzedovuketirunig.pdfIn PDF document text
    • https://laval.gatr.ca/img/etablissements/files/xekitorapixi.pdfIn PDF document text
    • http://smartmedicaleg.com/wp-content/plugins/formcraft/file-upload/server/content/files/16216a41d9e25c---17042054963.pdfIn PDF document text
    • https://takarasushimn.com/userfiles/files/86320078669.pdfIn PDF document text
    • http://training-solutions.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16225d852cd6fb---351056327.pdfIn PDF document text
    • https://newshieldinsurance.com/demo/gsa/final/images/file/gulororoveluzaremeze.pdfIn PDF document text
    • http://thienthaopc.com/upload/FCK/file/79350028230.pdfIn PDF document text
    • http://www.bennex.co.th/assets/kcfinder/upload/files/70101448360.pdfIn PDF document text
    • https://zabulgaria.org/userfiles/file/64493044102.pdfIn PDF document text
    • http://zjbfjt.com/upload/files/27699254700.pdfIn PDF document text
    • https://nhabe.com.vn/ckfinder/userfiles/files/79498479324.pdfIn PDF document text
    • http://diegogenna.it/userfiles/files/mevotazifikejomol.pdfIn PDF document text
    • http://crediramasrl.it/public/file/48422094986.pdfIn PDF document text
    • https://motodubai.com/uploaded_images/files/zepakujudosega.pdfIn PDF document text
    • http://anton-joyeros.shopcloud.es/ckfinder/userfiles/files/suvilo.pdfIn PDF document text
    • https://drahmetbostanci.com/wp-content/plugins/formcraft/file-upload/server/content/files/162097c29a4ffa---90606230071.pdfIn PDF document text
    • http://reklama-kemerovo.ru/files/files/xowamajopupada.pdfIn PDF document text
    • http://www.thegrcinstitute.org/app/webroot/js/ckfinder/userfiles/files/58175981486.pdfIn PDF document text
    • http://talentfuturesservices.com/sharpinstitute/images/files/dofoxibag.pdfIn PDF document text
    • http://www.samuitns.com/image/upload/File/47806507899.pdfIn PDF document text
    • http://maiodi.com/userfiles/files/76520787847.pdfIn PDF document text
    • https://mifuj.co.za/XSRYdR1H?utm_term=resume+for+job+example+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_off000626ca.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off000626ca.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000626ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x626CA 10880 bytes
SHA-256: 2b8a57d50da3def62c3d47dcc4cdb7b15eeac2b6359687870c8b2615b2c5974f
font_01_sfnt_off00063fd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63FD1 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off000656ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x656EC 19572 bytes
SHA-256: 5e3934127acba5a0683fadd24bfc01153b71be079da019ff85c5265581e42b1e