Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4f04190684afe3f…

MALICIOUS

PDF

242.5 KB Created: 2022-04-01 23:46:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-01
MD5: ea15cc7fb623642abdd8ff522e273612 SHA-1: 802bf2e909493d6e951fb4e420c7c22bc4b2da12 SHA-256: a4f04190684afe3febf5b60a5a5ddca610444f7c3e95253086efff0c7cfceaee
174 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9517

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://loheb.co.za/XSRYdR1H?utm_term=aoe2+mongols+guide PDF link annotation
    • https://daaeportrett.no/upload/file/83705825915.pdfIn PDF document text
    • https://hgd.hr/admin/kcfinder/upload/files/20066269404.pdfIn PDF document text
    • http://drkoopman.nl/cmsimages/file/95391886562.pdfIn PDF document text
    • https://www.veskom-slovakia.sk/gfx/administration/js/ckeditor/kcfinder/upload/files/35175701425.pdfIn PDF document text
    • https://brusroom.com/wp-content/plugins/super-forms/uploads/php/files/c91b0d4e69fb0d326f15f138b9382a4a/libolasof.pdfIn PDF document text
    • https://tivicom.vn/upload/files/xuliluza.pdfIn PDF document text
    • http://sadvita.lt/pav/file/28534464019.pdfIn PDF document text
    • https://ragidogatekanex.weebly.com/uploads/1/3/4/3/134388076/tigap.pdfIn PDF document text
    • https://g55net.com/webpagebuilder/ckfinder/userfiles/files/fojubagilosix.pdfIn PDF document text
    • https://tungafilm.com/dorceiys/ckfinder/userfiles/files/75584842228.pdfIn PDF document text
    • http://bioengenharia.com.br/public/libs/kcfinder/upload/files/80447233455.pdfIn PDF document text
    • http://hoangnamjsc.com/upload/files/21881750660.pdfIn PDF document text
    • https://gebejisidimi.weebly.com/uploads/1/3/5/3/135302949/e6fe5b2a23919.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1624347f498e44---34354926319.pdfIn PDF document text
    • https://radamokugek.weebly.com/uploads/1/3/2/6/132696621/9220059.pdfIn PDF document text
    • http://mzch.pl/userfiles/file/bivirepenetikuvotapiro.pdfIn PDF document text
    • https://sdhouse.info/ckfinder/userfiles/files/8921440027.pdfIn PDF document text
    • http://ls12368.com/userfiles/file/ruxemepolomabopot.pdfIn PDF document text
    • https://xodalolekuxol.weebly.com/uploads/1/3/4/1/134108590/70750b.pdfIn PDF document text
    • http://dogalakustik.com/depo/sayfaresim/file/bomamuwufobigu.pdfIn PDF document text
    • http://agapetown.net/ckfinder/userfiles/files/7167033596.pdfIn PDF document text
    • http://gyermekhaz.hu/Content/site_images/files/vixuxowive.pdfIn PDF document text
    • http://igabana.com/upfolder/e/files/20220316124334.pdfIn PDF document text
    • http://itagqatar.zajeltel.com/itag/file/files/90288705019.pdfIn PDF document text
    • https://rrr71.ru/upload_picture/nejimu.pdfIn PDF document text
    • http://smsalumni1971.com/apadmin/uploads/userfiles/files/19795283434.pdfIn PDF document text
    • http://lawcab.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16216e3216a37d---gifoxorutubokom.pdfIn PDF document text
    • https://bitipares.weebly.com/uploads/1/3/1/3/131379103/fogabifokaxer.pdfIn PDF document text
    • http://efckrakow.pl/userfiles/file/97369346496.pdfIn PDF document text
    • https://ripinesorojider.weebly.com/uploads/1/3/4/5/134597686/254c491b.pdfIn PDF document text
    • http://siticondominiali.com/admin/data/files/files/dopokoxatewedul.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1621287ff6c35b---84334443903.pdfIn PDF document text
    • http://hudebninastrojedrastik.cz/js/kcfinder/upload/files/19289793099.pdfIn PDF document text
    • https://lopadedabebaf.weebly.com/uploads/1/3/4/8/134897987/b970fd5aa11e9fe.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_off00035734.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00035734.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00035734.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x35734 10432 bytes
SHA-256: 0da09d86fd461cd21116b6c947dad1c7b421000150ece6de3670bae9273c6116
font_01_sfnt_off00036ea2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x36EA2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000386b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x386B4 19444 bytes
SHA-256: 94a31b2f9b160c42bd7a4780008b7441c09179d166e8ceeaf142a8435ba748f2