Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5d438c807d6b374…

MALICIOUS

PDF

480.4 KB Created: 2022-03-16 02:49:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-06
MD5: fb0362127b677516392ead4d9785b23e SHA-1: 4e2dd56e760c5f4e42c3c59f90a38934013dd690 SHA-256: b5d438c807d6b374af36b9fcd223206789fe3484e120fd0f5cd0d7e03847485e
161 Risk Score

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4734

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 https://sakesushimn.com/userfiles/files/kexinesep.pdf In PDF document text
    • http://ilksolar.com/Images/Media/files/sobupo.pdfIn PDF document text
    • https://paperland.bg/uploads/file/kalikotiwajusal.pdfIn PDF document text
    • https://alarrabnews.com/images/content/content/file/kigekegerej.pdfIn PDF document text
    • http://sadbaindia.org/admin/kcfinder/upload/files/35375770205.pdfIn PDF document text
    • https://www.thecandystoresudbury.com/wp-content/plugins/super-forms/uploads/php/files/un2iin2lkbge7r5b0tnv6gmc93/teninomujapepolabu.pdfIn PDF document text
    • http://ladyvenus.it/userfiles/files/29196151626.pdfIn PDF document text
    • http://brlairport.com/images/file/guwovudataxiviwerodawa.pdfIn PDF document text
    • http://www.mustwalge.ee/data/content/files/difesinesigazewepi.pdfIn PDF document text
    • https://tvmreza.tv/ckfinder/userfiles/files/56099475549.pdfIn PDF document text
    • http://holflorstudio1.cz/upload/files/dusuzofiluvajategudame.pdfIn PDF document text
    • http://mgmkt.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16211ad2033bcb---13391020427.pdfIn PDF document text
    • http://redskap.ru/userfiles/file/godulipixizizotu.pdfIn PDF document text
    • https://ekinyalitim.com/depo/sayfaresim/file/vokekebutuzose.pdfIn PDF document text
    • http://koronavirus.lenti.hu/feltoltes/files/bigomubaperolewuwilu.pdfIn PDF document text
    • http://silverk.ru/img/lib/file/bawuvewiropukuguweko.pdfIn PDF document text
    • https://almuhja.ps/ckfinder/userfiles/files/sokakatulojonasidotav.pdfIn PDF document text
    • http://cuspsurgeons.com/admin/kcfinder/upload/files/39262215683.pdfIn PDF document text
    • http://loxocongnghiep.com/MINH/user_files/file/vowavid.pdfIn PDF document text
    • http://nktrading.qa/file/files/82805225881.pdfIn PDF document text
    • http://ydt.youtuweb.cn/a/comimg/20220310201748_8795.pdfIn PDF document text
    • https://latarnik-kopice.pl/galeria/file/jinivaf.pdfIn PDF document text
    • https://gogreenonline.net/userfiles/image/fckeditor/file/kenateturobarononabe.pdfIn PDF document text
    • http://schunk-app.com/js/kcfinder/upload/files/44948108666.pdfIn PDF document text
    • http://market-oborudovanie.ru/upload/file/xisewimuda.pdfIn PDF document text
    • https://veronikavilla.hu/userfiles/file/47986376194.pdfIn PDF document text
    • http://www.fred-robin.com/ckfinder/userfiles/files/33593386557.pdfIn PDF document text
    • https://www.cdscabling.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/161ff99e3774c9---dubodetawupifagimajis.pdfIn PDF document text
    • http://saraco.kz/public/uploads/files/mewonew.pdfIn PDF document text
    • https://ossarentacar.cl/admin/uploads/file/15499520874.pdfIn PDF document text
    • http://szkolaprywatnaleszno.pl/userfiles/file/22866496106.pdfIn PDF document text
    • http://steinkirchener-bauernschaenke.de/img/editor/file/41484798076.pdfIn PDF document text
    • https://cafij.co.za/XSRYdR1H?utm_term=ios+for+iphone+6+freePDF link annotation
    • http://aquaview.net/uploads/assets/files/xaregak.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_off0006fd79.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0006fd79.bin)

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0006fd79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FD79 18988 bytes
SHA-256: 36be7f777d47e9609ead0c33dcf9d2d8596b0621a9f7c4f1a754edcb98804928
font_01_sfnt_off00072d9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72D9D 10268 bytes
SHA-256: 19aef79bd37ad5c641f35b15c78cfc798a7e59da9d5981946539b4542a766dfa
font_02_sfnt_off0007449b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7449B 16336 bytes
SHA-256: adf38969d40f501586e0caf93d33991e243baeeecfe575c4831cdbf64b7044fa
font_03_sfnt_off00075a9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75A9D 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9