Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5dbc5b8d1c5f606…

MALICIOUS

PDF

219.4 KB Created: 2022-03-01 21:53:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-28
MD5: 061421fe7990ed8d8dbd1ccc7ae035e3 SHA-1: 7383021d623a807cf9d774eb14ea0dd502159a7e SHA-256: c5dbc5b8d1c5f6066bc9ab8612748c838b46b78f2d578355ad78497d97d7080e
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6953

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 https://norin.co.za/XSRYdR1H?utm_term=pdfbox+add+png+image+to+pdf PDF link annotation
    • http://nhatrangpalacehotel.com/app/webroot/upload/files/55998475394.pdfIn PDF document text
    • https://www.xcelsus.de/wp-content/plugins/formcraft/file-upload/server/content/files/1620feb131e3f4---54754423683.pdfIn PDF document text
    • https://home18.ru/wp-content/plugins/super-forms/uploads/php/files/19fa26230c1d09ddb37491274af81589/xovukinajera.pdfIn PDF document text
    • http://www.aunay-sous-auneau.fr/ckfinder/userfiles/files/37304187703.pdfIn PDF document text
    • https://balatonpremiumvillas.hu/webroot/upload/files/91436967793.pdfIn PDF document text
    • http://muasamhangmy.com/ckfinder/userfiles/files/40536490203.pdfIn PDF document text
    • https://travelselection.us/wp-content/plugins/formcraft/file-upload/server/content/files/161fe30ea09587---motegesifafos.pdfIn PDF document text
    • http://jogastudioveszprem.hu/kcfinder/upload/files/tabopuvovevu.pdfIn PDF document text
    • http://tlw.ro/UserFiles/file/85041140069.pdfIn PDF document text
    • http://erodiertechnik-wenzel.de/userfiles/file/93073669014.pdfIn PDF document text
    • http://moonyart.ru/admin/ckeditor/kcfinder/upload/files/20786126178.pdfIn PDF document text
    • http://navigator-nsk.ru/userfiles/file/takufigizewanojij.pdfIn PDF document text
    • https://www.frankcapassoandsons.com/wp-content/plugins/formcraft/file-upload/server/content/files/1621349dbb1385---12908668741.pdfIn PDF document text
    • http://www.deadclan.nl/wp-content/plugins/formcraft/file-upload/server/content/files/161fa1d312245b---2329065878.pdfIn PDF document text
    • http://manavpublicschool.org/manav/userfiles/file/14335933025.pdfIn PDF document text
    • http://nachhilfeschule.havonix.com/ckfinder/userfiles/files/rukenenakigidojiba.pdfIn PDF document text
    • https://topas-rus.ru/media-temp/img/uploads/files/97567378283.pdfIn PDF document text
    • http://chianchang.yun2u.com/upload/files/66533921971.pdfIn PDF document text
    • http://makesomenoise.hu/upload/file/55615785335.pdfIn PDF document text
    • http://hwangtosidae.com/userData/ebizro_board/file/71019793284.pdfIn PDF document text
    • http://theartofdesign.nl/ckfinder/userfiles/files/66789854814.pdfIn PDF document text
    • https://foundlight.ca/home/foun6192/public_html/files/custom_files/file/sokuguzepini.pdfIn PDF document text
    • http://ajk-opakowania.eu/upload/fck/file/70916994507.pdfIn PDF document text
    • https://stancijanegrin.com/userfiles/file/23763229793.pdfIn PDF document text
    • https://www.iccis20.scrs.in/kcfinder/upload/files/37663443018.pdfIn PDF document text
    • http://www.peritaonline.es/ckfinder/userfiles/files/1809259758.pdfIn PDF document text
    • http://sieuthihatgiong.vn/webroot/img/files/84036569738.pdfIn PDF document text
    • https://ecoinkworld.com/wp-content/plugins/super-forms/uploads/php/files/295bfee551852a4a663c2c2670fad6f2/tinimekutebika.pdfIn PDF document text
    • http://xperion.hu/wp-content/plugins/super-forms/uploads/php/files/13cbee6a22a44aeb9623985262e67d33/wofexazalorod.pdfIn PDF document text
    • http://aaas.handyfriendship.com/upload/files/83218536437.pdfIn PDF document text
    • http://ne-moloko.ee/wp-content/plugins/super-forms/uploads/php/files/1a201e11001e3267f13e6efd7b25fb94/45548922510.pdfIn PDF document text
    • https://nikunjfoundation.org/ckfinder/userfiles/files/73096447914.pdfIn PDF document text
    • https://yourwebcenter.com/files/file/47361068028.pdfIn PDF document text
    • http://yingtailong.com/upload/file/220215235108394270gh6ozpg9sjca.pdfIn PDF document text
    • http://sangtaoad.com/uploads/userfiles/file/fawadizola.pdfIn PDF document text
    • https://objednavky.dortovapohotovost.cz/obrazky/files/powanimekevem.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_off00030154.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30154 10772 bytes
SHA-256: fd9e6b7713d7f97a2cf5afc111d1a315a40f79b5468af2dcee37f3a47ed15b74
font_01_sfnt_off000319ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x319AC 16832 bytes
SHA-256: 6fd07c4dbdba966948a63f1ac547cbaf61378adf5e0f598d7008eb814ab78b96
font_02_sfnt_off00034533.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x34533 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9