Malicious PDF — malware analysis report

Static analysis result for SHA-256 7939715cc0e52023…

MALICIOUS

PDF

95.9 KB Created: 2022-01-26 20:08:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-15
MD5: 91f361b22e7dfdb854b2e4405c473596 SHA-1: 00488bd7e20336e0d3adea276f6fd194c9d36aa6 SHA-256: 7939715cc0e52023c71efe03c6041e3e8fabc34d285ce3c6ff338b8a2583db5f
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded JavaScript and numerous external URIs, many of which are hosted on disposable domains or compromised CMS upload storage, indicating a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9866

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
  • 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.
  • 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://mifuj.co.za/XSRYdR1H?utm_term=ciclon+ls+lifting+station+manual PDF link annotation
    • https://nstyapi.com/resimler/files/37467408250.pdfIn PDF document text
    • https://www.mercedesbenzofaustinservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1617d267098cdd---41536596475.pdfIn PDF document text
    • http://aktifithalat.com/resimlerfiles/sosusoxosobeduwagegek.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/161f04744d1d54---64349667467.pdfIn PDF document text
    • http://tprcindia.com/ckeditor/ckfinder/userfiles/files/venewataj.pdfIn PDF document text
    • http://dreiseengrundschule.de/files/luvamilodozukewavafabazo.pdfIn PDF document text
    • https://phu-komplex.pl/pliki/file/lodixoxiw.pdfIn PDF document text
    • https://niboparis.com/upload/fckeditor/files/42810535142.pdfIn PDF document text
    • https://trungtammaychieu.com/ad-min/js/libs/kcfinder/upload/files/pebisibakebuxeripezurokid.pdfIn PDF document text
    • http://ziguratex.com/helpdesk/app/webroot/img/userfiles/files/31655041390.pdfIn PDF document text
    • https://jainajewellers.com/kcfinder/upload/files/wepigimipav.pdfIn PDF document text
    • https://perfecthospital.net/ckfinder/userfiles/files/31360245163.pdfIn PDF document text
    • http://www.introspekta.si/ckfinder/ckeditor_uploaded_files/files/80777417737.pdfIn PDF document text
    • https://karpataljaturizmus.hu/upload/nudaxajatuzumuv.pdfIn PDF document text
    • http://ahkjt.com/upfile/file/kirimibi.pdfIn PDF document text
    • http://invismortgagebroker.com/images/file/wenenamegevodunopuveruw.pdfIn PDF document text
    • https://traiteur-troyes-mariage-buffet-aube-10.blaisot-traiteur.fr/ckfinder/userfiles/files/72905329102.pdfIn PDF document text
    • https://flylights.pl/wp-content/plugins/super-forms/uploads/php/files/u21l6s7l3q1onkart22o7tolhl/16127656667.pdfIn PDF document text
    • http://lousart.com.br/ckeditor/kcfinder/upload/files/64424276047.pdfIn PDF document text
    • http://jcnjl.com/userfiles/files/21894184196.pdfIn PDF document text
    • http://www.pzkexie.com/up_files/file/54988171483.pdfIn PDF document text
    • http://uyaviation.com/wp-content/plugins/formcraft/file-upload/server/content/files/1618a9cfe03a29---30790398333.pdfIn PDF document text
    • http://agataklimowska.pl/userfiles/file/lagonefuzigonakexon.pdfIn PDF document text
    • http://piscesappliances.com/userfiles/file/74504002784.pdfIn PDF document text
    • http://potlista.com/file/files/27200206128.pdfIn PDF document text
    • https://www.hauptsache.cc/wp-content/plugins/formcraft/file-upload/server/content/files/1619e51a2e38b7---pegedij.pdfIn PDF document text
    • http://parmalab.it/userfiles/files/79075321807.pdfIn PDF document text
    • https://get.belonnanotservice.ga/hooole?/wp-content/plugins/formcraft/file-upload/server/content/files/161950a0e6cde2---fanorobunewada.pdfIn PDF document text
    • https://club-1c.kz/app/webroot/js/kcfinder/upload/files/kiwali.pdfIn PDF document text
    • http://panelko.hu/files/files/tuwuzegilogofibudiviz.pdfIn PDF document text
    • https://questyme.com/userfiles/file/busepubukesubakinixojilal.pdfIn PDF document text
    • https://fenixfalt.com/userfiles/file/fazurikolarabiwot.pdfIn PDF document text
    • https://adilakaryakitnakliyat.com/kcfinder/upload/files/bodobikofozugemigitowa.pdfIn PDF document text
    • http://fecirturizm.com/resimler/files/sewut.pdfIn PDF document text
    • http://ceramkgres.ru/userfiles/file/xaxaduvijopagoje.pdfIn PDF document text
    • http://ciskmv.com/css/file/zevewopufezol.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 PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011231.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11231 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_01_sfnt_off000128d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x128D5 10576 bytes
SHA-256: 32163258aa95867156213140b4e7692d2b37a7cdcf5ed8d8014a80055cfe1a8e
font_02_sfnt_off000140fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x140FE 18172 bytes
SHA-256: 7c047cbb204fc1ed5cc970b17e19bc31920f9ab32a0728d269041976b12d3c75

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