Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8b9745e52a1cd5c…

MALICIOUS

PDF

346.1 KB Created: 2022-03-31 04:31:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-06
MD5: 091e20df5a987905c16c4a9295141fb8 SHA-1: 9af5d4ae34d1e4fac758d850290a261804b736ce SHA-256: a8b9745e52a1cd5c0d54f819778631ea238de21315d43fb0a0da96bb515d502a
191 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7480

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://vinaaquachem.com/uploads/files/metamege.pdf In PDF document text
    • https://www.eclof.am/assets/ckeditor/kcfinder/upload/files/68859216705.pdfIn PDF document text
    • https://urudolfa.sk/upload/files/ninizugod.pdfIn PDF document text
    • https://ripedesign.com/app/webroot/files/fckeditor/file/45040394728.pdfIn PDF document text
    • https://icicle-mountaineering.ltd.uk/ckfinder/userfiles/files/juxajefimafivinabefoki.pdfIn PDF document text
    • http://zge-led.com/luodan/images/userfiles/file/wokekudularojexer.pdfIn PDF document text
    • http://wpchkg.com/upload/image/file/lopokabumegalez.pdfIn PDF document text
    • https://rubin2000-distribuitorshop.ro/userfiles/file/tibabitonuniwisal.pdfIn PDF document text
    • https://cosmopolitanhotel.eu/uploads/wysiwyg/files/bulufup.pdfIn PDF document text
    • http://terrigena.cz/data/pic/files/zupepanawagij.pdfIn PDF document text
    • https://webhostmurah.com/wp-content/plugins/formcraft/file-upload/server/content/files/1621ec81033c32---jerul.pdfIn PDF document text
    • http://doicoffee.co.jp/js/kcfinder/upload/files/1949960394.pdfIn PDF document text
    • http://clubcalidad.pfsgrupo.com/formacion/profesores/userfiles/file/1518938701.pdfIn PDF document text
    • http://pronobile.de/catalog/file/2774744041.pdfIn PDF document text
    • http://xchangeofamerica.com/userfiles/files/jarosipisorefuloma.pdfIn PDF document text
    • http://mlgholding.hu/admin/kcfinder/upload/files/dulimixidosunaginader.pdfIn PDF document text
    • http://www.crislbd.com/public/admin/assets/ckeditor/kcfinder/upload/files/39832268398.pdfIn PDF document text
    • https://xn--80aaa1anac6cg.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/1cb6d1d2a09df1dbf7b8846f7fbc3bb4/59046656857.pdfIn PDF document text
    • https://414movement.com/wp-content/plugins/super-forms/uploads/php/files/af6ffe0ded02d31a6b00fecbea6723bb/sabajosotefubila.pdfIn PDF document text
    • https://ijp2.com/contents/files/61244617787.pdfIn PDF document text
    • http://bitree.net/ckfinder/userfiles/files/22846602543.pdfIn PDF document text
    • http://kvbm.org/pds/userfiles/files/xifupujudurelovinidek.pdfIn PDF document text
    • http://www.oe.com.tw/ezadmin/ckfinder/userfiles/files/29226250046.pdfIn PDF document text
    • http://lagostena.it/userfiles/files/labagilixitijugozo.pdfIn PDF document text
    • http://www.immiflex.com/wp-content/plugins/formcraft/file-upload/server/content/files/1620c840923067---neforajavuxejefivi.pdfIn PDF document text
    • http://kleinschadenexpert.de/userfiles/file/ridupedi.pdfIn PDF document text
    • http://www.upratujemeinak.sk/admin/ckeditor/kcfinder/upload/files/jinovakavekoxakugidokeri.pdfIn PDF document text
    • http://wefocusdesign.com/upload/files/43510065877.pdfIn PDF document text
    • https://amursvoidom.ru/media/files/81444142089.pdfIn PDF document text
    • http://dejonghenico.be/sites/default/files/file/semedigepugasedowi.pdfIn PDF document text
    • http://ban-dong-mat-cong-nghiep.theonejsc.com/userfiles/file/53254386488.pdfIn PDF document text
    • http://micdelhi.in/userfiles/file/75526482023.pdfIn PDF document text
    • https://wsbe17hongkong.hk/_bin/ckfinder/userfiles/files/64432767725.pdfIn PDF document text
    • http://lhdrum.com/User_File/UpFile/file/20220311112910_NjA1NTIyODIyNjY=.pdfIn PDF document text
    • http://dh-cell.com/ckfinder/userfiles/files/pizavirujuzaluneguku.pdfIn PDF document text
    • https://wirut.co.za/XSRYdR1H?utm_term=war+on+the+basepathsPDF 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_off0004faa1.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0004faa1.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0004faa1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4FAA1 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off000511bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x511BC 18276 bytes
SHA-256: 966501acc2bfc084be2798ac889ca588524b6de37bf16806e2c11c5ef4d25acd
font_02_sfnt_off000541b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x541B3 10344 bytes
SHA-256: 09050b771b74862abb7d7828d0eae7f93ee61f8a33017430d7b67c73e60f4723