Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d381dfa3d8ea76d…

MALICIOUS

PDF

328.1 KB Created: 2022-04-29 13:20:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-16
MD5: d74f7793ec3b14256980831d6a66ee9d SHA-1: a5aa7c8da296a1aaacd1f7594553846c8ac63ece SHA-256: 5d381dfa3d8ea76d6837d10b8fb72c555a9e1251881ecaaaec860a10a32323df
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7480

Heuristics 6

  • 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.
  • 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://journalstudiesanthropology.ro/adm/jsq/kcfinder/upload/files/narikokejufukoxelevuz.pdf In PDF document text
    • http://stroisvias.ru/userfiles/file/2696862357.pdfIn PDF document text
    • http://xdata.pl/app/webroot/img/ckf/files/lamujemulunowenupolix.pdfIn PDF document text
    • https://graveyards-fuj.ae/userfiles/files/67502497856.pdfIn PDF document text
    • http://repflex.servermill.com/files/upload/files/91964330918.pdfIn PDF document text
    • http://carrozzeriardue.it/userfiles/files/93122237492.pdfIn PDF document text
    • http://topbondtape.com/uploadss/file/49726624589.pdfIn PDF document text
    • http://www.salda.lt/saldus/kcfinder/upload/files/xopigod.pdfIn PDF document text
    • https://goldengatetaichiqigong.com/userfiles/file/fepapazomi.pdfIn PDF document text
    • http://xn----7sba5bgeydgh6hd.xn--p1ai/upload/files/bezerumuvuda.pdfIn PDF document text
    • http://jun-travel.com/userfiles/file/wegabogumerefepuside.pdfIn PDF document text
    • http://reszke.pl/fckeditor/editor/filemanager/connectors/php/file/zokenepituxawedemomukiji.pdfIn PDF document text
    • https://nazrabilisim.com/calisma2/files/uploads/dajezumapup.pdfIn PDF document text
    • http://sgd42.ru/userfiles/file/32282027948.pdfIn PDF document text
    • https://horecathanglong.com/uploads/file/mefaseliwajedibizojoxo.pdfIn PDF document text
    • https://www.wunderlandovi.hu/kcfinder/upload/files/boteturemidawuxife.pdfIn PDF document text
    • https://cffcommunications.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/162244ae7dd678---xajawasekikiworuxija.pdfIn PDF document text
    • http://ijfbacknumber.org/editor_up/keluxoguzekobosuxat.pdfIn PDF document text
    • http://onestep-tokyo.com/userfiles/file/62101737923.pdfIn PDF document text
    • http://southportrubbish.com/wp-content/plugins/formcraft/file-upload/server/content/files/162688754aecb4---vesogubavibomilovalola.pdfIn PDF document text
    • http://teusz.pl/UserFiles/file/xijekemixisarorewukuf.pdfIn PDF document text
    • http://ekachaiguitarist.com/ckfinder/userfiles/files/boxexogivu.pdfIn PDF document text
    • http://www.advancedevents.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16220d6d5b14a3---zisodumopowusomaj.pdfIn PDF document text
    • http://tourtraveltalk.com/app/webroot/js/kcfinder/upload/files/10401652817.pdfIn PDF document text
    • http://chinalabware.es/d/files/1993435090.pdfIn PDF document text
    • https://sistemagestiondpr.co/userfiles/file/lidomilaliji.pdfIn PDF document text
    • http://deleersnijder-bocaege.be/images/file/34836878765.pdfIn PDF document text
    • http://ukicda.com/admin/fckeditor_upfiles/file/2022042015312280554.pdfIn PDF document text
    • https://apagar.cinemadossertoes.com/ckfinder/files/81325123832.pdfIn PDF document text
    • https://affze.com/userfiles/file/21428027180.pdfIn PDF document text
    • http://spbi.cz/res/file/vagugadifokajib.pdfIn PDF document text
    • https://loheb.co.za/XSRYdR1H?utm_term=lagu+michael+jackson+behind+the+maskPDF link annotation
    • https://kocarbon.vn/luutru/files/42442514631.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_off0004aa96.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0004aa96.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0004aa96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4AA96 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0004c2ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4C2AD 11136 bytes
SHA-256: c507ae5027202ede37af8fd18391a9415b61232eac503462a5b659cd18dd08c7
font_02_sfnt_off0004dc3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4DC3E 20196 bytes
SHA-256: d5207b45722a36f1fc3b48bd050f565a1d4ad5f1e8c94963ceb70c0f7f307511