Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5d843505e2c1820…

MALICIOUS

PDF

151.7 KB Created: 2022-02-28 04:50:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-28
MD5: 0c103abd37e0326b834ba7661e4f5637 SHA-1: 652437d916a5cf112c4133beae2f693dc846e695 SHA-256: c5d843505e2c1820ce6526719996104be7a188f499de8ca238118903de802094
204 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7973

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://sunuf.co.za/XSRYdR1H?utm_term=mahakosh+beams+report PDF link annotation
    • https://cristiandellavedova.com/wp-content/plugins/super-forms/uploads/php/files/ad45bc84d4529cc505bd7a10bf0d9ba1/nadavedijosavivutobaf.pdfIn PDF document text
    • http://methese.com/upload/files/tazafosi.pdfIn PDF document text
    • https://sabagdasarov.ru/upload/file/46303553165.pdfIn PDF document text
    • http://domusanna.it/userfiles/files/80397485429.pdfIn PDF document text
    • http://pk-rowery.pl/user_pict/file/ludutanejo.pdfIn PDF document text
    • https://kristaldicarlo.com/userfiles/file/84005967742.pdfIn PDF document text
    • https://www.asoriofrio.org/ckfinder/userfiles/files/jelufo.pdfIn PDF document text
    • https://ballestermultiservicios.com/wp-content/plugins/formcraft/file-upload/server/content/files/16105ff5e8cb0e---dokisidilidenavajidetupeg.pdfIn PDF document text
    • http://imreelectric.sk/uploads/file/pofarukeviteririno.pdfIn PDF document text
    • http://www.bioderko.chodziez.pl/kcfinder/upload/files/zeduvamu.pdfIn PDF document text
    • http://baggiez.net/userfiles/file/74537393157.pdfIn PDF document text
    • http://texinpack.com/uploadfile/file///2021082521104787.pdfIn PDF document text
    • http://letresorellebio.it/userfiles/files/besaxudapusovetez.pdfIn PDF document text
    • http://1a-hotel.ch/ckeditor/kcfinder/upload/files/wugojupumetatasomekubax.pdfIn PDF document text
    • https://inprovitcaribe.com/ckfinder/userfiles/files/fubeserejotazudibega.pdfIn PDF document text
    • https://dpengineerindia.com/admin/userfiles/file/56944788153.pdfIn PDF document text
    • https://maconlux.lu/userfiles/files/2147025295.pdfIn PDF document text
    • https://www.grandeprairie.org/wp-content/plugins/formcraft/file-upload/server/content/files/161f8fab31a6f0---22906701153.pdfIn PDF document text
    • http://zzzwchem.com/upload/files/rapoliwisowelogaxosorusoj.pdfIn PDF document text
    • http://belspelen.nl/admin/kcfinder/upload/files/9035800780.pdfIn PDF document text
    • http://abogadosaguilar.com/ckfinder/userfiles/files/55534693356.pdfIn PDF document text
    • http://www.naturapreserved.com/wp-content/plugins/formcraft/file-upload/server/content/files/162183d98efb42---fakezonula.pdfIn PDF document text
    • https://goooinggroup.com/userfiles/files/20210930_135810.pdfIn PDF document text
    • http://dinskayarealty.ru/media/file/80308249995.pdfIn PDF document text
    • http://ttccid.com/userfiles/file/90142946422.pdfIn PDF document text
    • http://www.nbrownies.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1612e9e7d1a4cc---rujotogisebufoliniwod.pdfIn PDF document text
    • http://colfacor.org.ar/administrador_web/kcfinder/upload/files/96947080842.pdfIn PDF document text
    • https://numen-wow.com/userfiles/cloud/files/futogosowe.pdfIn PDF document text
    • http://rrbrentacars.com/files/others/kemuzesijolavidopaxi.pdfIn PDF document text
    • http://aibrpjoaae2.specialty-match.com/upload/files/59621004749.pdfIn PDF document text
    • https://maximaainfoways.com/WebExams/ckfinder/userfiles/images/files/giwavutisabebajo.pdfIn PDF document text
    • http://sieuthivatlieuhoanthien.com/upload/files/28615946937.pdfIn PDF document text
    • https://euforbiabulgaria.gbinvest.net/uploads/pages/files/13091829580.pdfIn PDF document text
    • http://www.mostex.sk/files/articles/file/71556534019.pdfIn PDF document text
    • http://infinity-c-t.com/userfiles/file/71437249182.pdfIn PDF document text
    • https://primax.fr/wp-content/plugins/super-forms/uploads/php/files/pnakjcmdsj6fhkudh5ptvs5av7/duvoxajobikobi.pdfIn PDF document text
    • https://hw-power.com/uploads/ckfiles/files/61b4a25675242.pdfIn PDF document text
    • http://www.hotel-margherita.com/wp-content/plugins/formcraft/file-upload/server/content/files/162135f960c324---17400176161.pdfIn PDF document text
    • https://hw-power.coIn macro / runtime command snippet
    • 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_off0001f049.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1F049 10500 bytes
SHA-256: 26148c90270633703a6d967b81a69605b9643a0cd8450184f87d7dc4685baaeb
font_01_sfnt_off000207fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x207FE 18472 bytes
SHA-256: 6c3300969c3e1ed33513d6cad8b85bf2a07a87a901405725e8158e040846f436
font_02_sfnt_off00023886.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x23886 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9