Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4f1737460d3e4e9…

MALICIOUS

PDF

188.7 KB Created: 2022-03-07 15:49:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-01
MD5: bccee18966eafe48271762d06c27a516 SHA-1: d5e633eda56822440e365b5738225a174f9e6ba2 SHA-256: a4f1737460d3e4e90ee754af980a8bd052ed8fce0e3485b00481eee038619d48
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7194

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
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. 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 https://tevav.co.za/XSRYdR1H?utm_term=tinxsys+c+form+verification+punjab PDF link annotation
    • https://trompis-tondschungel.de/userfiles/file/37287450161.pdfIn PDF document text
    • https://www.geosuiteonline.de/wp-content/plugins/formcraft/file-upload/server/content/files/1620a6fd6bb7ce---98730130497.pdfIn PDF document text
    • http://smartvoicecom.com/userfiles/53761321378.pdfIn PDF document text
    • http://xn--80ackbssfuieecff0e8c.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/e2dqos2fljsh1n77mc1ccolin6/gadanitazawowaz.pdfIn PDF document text
    • https://promobryansk.ru/userfiles/files/zozirapij.pdfIn PDF document text
    • http://linpus.com/app/webroot/userfiles/files/revokagoxorizivi.pdfIn PDF document text
    • http://acetuitioncentre.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16220410f1dd80---nafowobokamiriwuxijim.pdfIn PDF document text
    • http://www.ztc.hekko24.pl/panel/kcfinder/upload/files/41453248272.pdfIn PDF document text
    • https://derfo.info/resimler/files/soniwe.pdfIn PDF document text
    • https://relaxbotanika.cz/ckfinder/userfiles/files/43087337309.pdfIn PDF document text
    • https://www.elektrobetrieb-scholz.de/wp-content/plugins/formcraft/file-upload/server/content/files/161ffc56ef1c05---wipikavazumeratewume.pdfIn PDF document text
    • http://briztravel.com/upload/files/59828705926.pdfIn PDF document text
    • http://zoncmswebsitebeheer.nl/files/editor/file/34233710392.pdfIn PDF document text
    • http://jingluo.net/uploadfiles/files/71647917995.pdfIn PDF document text
    • http://ptd-tver.ru/content/files/upload/files/rukeda.pdfIn PDF document text
    • https://www.sgestrecho.es/wp-content/plugins/formcraft/file-upload/server/content/files/161ff52c49a3a9---69032295049.pdfIn PDF document text
    • http://muralsdecoracio.com/ckeditor/kcfinder/upload/files/77104959657.pdfIn PDF document text
    • https://www.cistarekaupa.cz/kcfinder/upload/files/36420141610.pdfIn PDF document text
    • http://quickfix-poland.com/wp-content/plugins/formcraft/file-upload/server/content/files/16205973994949---33622907029.pdfIn PDF document text
    • http://skolicka.eu/foto/images/file/fijexaralijawexebumadogug.pdfIn PDF document text
    • https://admin.gruppoperonirace.it/kcfinder/upload/files/semixivuj.pdfIn PDF document text
    • https://alcc.vn/wp-content/plugins/super-forms/uploads/php/files/tl8iatg23qlhsq131l046kqoj3/wuzabomonozawesuwaduz.pdfIn PDF document text
    • http://tamezou.com/upload/ckfinder/files/wugarikirowebemebofur.pdfIn PDF document text
    • https://atahca.pt/atahca_gestor/kcfinder/upload/files/35304207215.pdfIn PDF document text
    • https://inoxquochoang.com/app/webroot/files/images/pages/files/52307366862.pdfIn PDF document text
    • https://milorem-service.ru/userfiles/file/dogibunowofud.pdfIn PDF document text
    • http://hichipper.com/hichipper/uploadfile/file/2022022003541273499.pdfIn PDF document text
    • https://rubfila.in/files/file/lemapaliwusivoxabe.pdfIn PDF document text
    • http://austral-immo.com/userfiles/files/47755857296.pdfIn PDF document text
    • http://www.iqubz.com/wp-content/plugins/formcraft/file-upload/server/content/files/162179b7ca7eff---90546006999.pdfIn PDF document text
    • https://espiber.misitioexpress.com/images/uploadedimages/file/jidisipexapuzefa.pdfIn PDF document text
    • http://qzmrmfhyxh.com/upload/file/guxunikazer.pdfIn PDF document text
    • http://www.deco-interieure.com/userfiles/file/48585536678.pdfIn PDF document text
    • http://nj-rshb.com/v15/Upload/file/2022224196416153.pdfIn PDF document text
    • http://elmasryeverline.net/public/kcfinder/upload/files/tunuleziwibumaxu.pdfIn PDF document text
    • https://arenerachicamocha.sinecsas.com/ckfinder/userfiles/files/8069484104.pdfIn PDF document text
    • https://alexspa.kaszebe.com/userfiles/file/89321837117.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_off000284de.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off000284de.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000284de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x284DE 17212 bytes
SHA-256: b9f9ffab603ec485f67326a3cf980340d121f72bbb8ea8034c2c8420eb408040
font_01_sfnt_off0002b159.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B159 11208 bytes
SHA-256: b3839fded74d61d2c69f2f901f8d216265e614506a8c44f315ed8e090c1f9939
font_02_sfnt_off0002cb66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2CB66 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9