Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd74042b3d588cfb…

MALICIOUS

PDF

81.4 KB Created: 2021-10-13 09:03:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-18
MD5: 6c04d7b9a55c6371eb6913ff7b928f66 SHA-1: bfd71996e16e6f0a77e8ff30ea128301d19e558b SHA-256: cd74042b3d588cfb2fc38372034e190442b41e51c58bd56e1ac653bd844fb052
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9846

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 http://campbellelectronics.com/uploads/25174482895.pdf In PDF document text
    • http://fiumevivo.it/userfiles/files/62694906610.pdfIn PDF document text
    • http://brothersaluminium.com.np/wp-content/plugins/formcraft/file-upload/server/content/files/161606bdbb74f8---46869573878.pdfIn PDF document text
    • http://autoscuolepintozzi.it/userfiles/files/puluwakubupexufixugoguw.pdfIn PDF document text
    • http://susasoft.com/upload/userfiles/files/63753874268.pdfIn PDF document text
    • https://ssmavidiyar.com/public/content-images/files/fimilovanuzoxezuf.pdfIn PDF document text
    • http://orel-trinity.ru/sites/default/files/file/58927008962.pdfIn PDF document text
    • https://ghnservizi.com/file/45799979025.pdfIn PDF document text
    • https://b2cexpressdemo.com/userfiles/file/33844994108.pdfIn PDF document text
    • https://iamluno.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614909ace5016---zawaneguruwu.pdfIn PDF document text
    • https://fong-cai.com/upload/files/pikes.pdfIn PDF document text
    • http://mazdooradda.com/userfiles/file/femivekewevumosulog.pdfIn PDF document text
    • https://apc-algercentre.dz/ckfinder/userfiles/files/40614862518.pdfIn PDF document text
    • http://photo-ostrov.com/ckfinder/userfiles/files/87348515762.pdfIn PDF document text
    • http://tfe-design.dk/userfiles/file/17124479151.pdfIn PDF document text
    • http://aybar-gallery.com/userfiles/files/98858418703.pdfIn PDF document text
    • http://king-tableware.com/uploads/files/202109100946412747.pdfIn PDF document text
    • https://mysmartedu.com/uploadimages/files/90733446321.pdfIn PDF document text
    • http://pantryscan.com/123cars/imagefck/file/wexewatodo.pdfIn PDF document text
    • http://saraiaser.nl/userfiles/file/40260760640.pdfIn PDF document text
    • http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/1613e3fd5b118e---mepewimiwegetudifonedi.pdfIn PDF document text
    • http://tantusmarina.com/UserFiles/file/90179608373.pdfIn PDF document text
    • https://hrmconsulting.biz/upload/files/40369894902.pdfIn PDF document text
    • http://twsl.mingann.info/upload/ckfinder_temp/files/20210907040455.pdfIn PDF document text
    • http://orzo.cz/uploaded/files/18241398920.pdfIn PDF document text
    • https://hearing-outlet.com/uploads/files/202109151226496556.pdfIn PDF document text
    • http://feedproxy.google.com/~r/Xvkpad/~3/UsNeCLCzgYg/uplcv?utm_term=random+chat+for+twoPDF link annotation
    • 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_off0000d7c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7C7 18960 bytes
SHA-256: 0157376140f1573d0354f4daf5dc56211d103b4cddbd38c114f49e3940e4ada5
font_01_sfnt_off0001090c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1090C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00012123.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12123 10436 bytes
SHA-256: 6b7961ad4d07be28de3f5a0b29c170d64f9d3dd7a40ddd5e90f347ec3c8aa2a1