Malicious PDF — malware analysis report

Static analysis result for SHA-256 5520d432d3dfe627…

MALICIOUS

PDF

349.8 KB Created: 2022-01-10 05:50:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-19
MD5: 973f7c0b452debbd5c4c63b4a148b4bf SHA-1: 4e200317239fe263522bfd23a73e759d08ea0aea SHA-256: 5520d432d3dfe627f9eefd3de1bbfc988dfc6fa6462e2813ce2dbefc5933febf
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6763

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://centar-znr-zop.hr/wp-content/plugins/formcraft/file-upload/server/content/files/161d7a44138722---97304585749.pdf In PDF document text
    • http://3duct.com/wp-content/plugins/formcraft/file-upload/server/content/files/1615fbb2fcb82c---zazupobobe.pdfIn PDF document text
    • http://www.annaleehuber.com/content_files/file/mugukuzubanixirirufuzi.pdfIn PDF document text
    • https://californiaoptionsrealestate.com/wp-content/plugins/super-forms/uploads/php/files/5670af56677bd5baf45d68dea51d02a6/fuvub.pdfIn PDF document text
    • http://dlzhrjd.com/images/uploadfile/files/mezonuxobewigipe.pdfIn PDF document text
    • https://reytrans.es/kcfinder/upload/files/54339448444.pdfIn PDF document text
    • http://alconsprom.ru/ckfinder/userfiles/files/jesajikuvivib.pdfIn PDF document text
    • http://protech.com.ng/wp-content/plugins/formcraft/file-upload/server/content/files/161dad96de055a---nudugeretisukuparavugusi.pdfIn PDF document text
    • http://ducthoaudio.com/upload/files/lofawesimedidikozizivof.pdfIn PDF document text
    • http://www.tenniscanberra.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1617091afbef85---fuxurapesosover.pdfIn PDF document text
    • http://frigotechreina.com/userfiles/files/74796250651.pdfIn PDF document text
    • https://tahitotfalu.hu/ckfinder/userfiles/files/1186406996.pdfIn PDF document text
    • https://ourlady-schools2.com/userfiles/files/83565720258.pdfIn PDF document text
    • http://handbook.hu/upload/page/file/2435021598.pdfIn PDF document text
    • https://xn--80aujdnb8a.xn--p1ai/kcfinder/upload/files/bekutigavotumidejateroma.pdfIn PDF document text
    • https://andrejc.si/files/file/95233380788.pdfIn PDF document text
    • http://belv.ru/userfiles/file/pobifigesib.pdfIn PDF document text
    • https://joyfool.art/wp-content/plugins/super-forms/uploads/php/files/d6478e966df9f618f7b0a25a385c01ac/jilexiburas.pdfIn PDF document text
    • https://zoldlepes.hu/userfiles/file/lebadamuxexonajawe.pdfIn PDF document text
    • https://burstallconrad.com/editor_files/file/telepuxejezew.pdfIn PDF document text
    • https://gamletaarnhuset.no/wp-content/plugins/formcraft/file-upload/server/content/files/161a6fb27882d0---23693753084.pdfIn PDF document text
    • http://georgewongdesign.com/gwd/upload/files/niwipi.pdfIn PDF document text
    • https://www.hotelrestaurantmacarena.fr/ckfinder/userfiles/files/kemibivodo.pdfIn PDF document text
    • https://palacioquintin.com/upload/editor/file/pewilak.pdfIn PDF document text
    • http://cdjuchuan.com/upload/files/rizomoduvewuzutunotoboda.pdfIn PDF document text
    • https://lasievphov.com/admin/ckeditor/kcfinder/upload/files/70673111461.pdfIn PDF document text
    • https://pistant.ru/uplcv?utm_term=best+rated+kitchen+faucets+consumer+reportsPDF link annotation
    • http://alessandrotria.altervista.org/areap/ckfinder/userfiles/files/binogamekudadapolap.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_off00050719.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00050719.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00050719.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x50719 18368 bytes
SHA-256: 928132a96a27fca04ab4d3978b6a4f91cbbe66beea31824d24162d9ea44a06ac
font_01_sfnt_off000536fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x536FB 11084 bytes
SHA-256: dca7d3613579968271df9c9059f2ef39bb8f9e23005e547dc5ba3c9d1d667f50
font_02_sfnt_off000550b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x550B1 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336