Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ddd4ce380a24c4e…

MALICIOUS

PDF

82.4 KB Created: 2021-09-13 10:04:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-26
MD5: 3f004fb425f641851f36f9855ba9d16c SHA-1: 6c0cf55b7ca2080415646f2e2d6aed2067c2fef3 SHA-256: 3ddd4ce380a24c4e0cd6d35b8bba84a25af28e4edd0a6b31d7d44a44ac637d39
96 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

Heuristics 5

  • 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 https://nepalonlineexam.tisaracademy.com/userfiles/files/33028135443.pdf In PDF document text
    • https://otterdisplay.com/userfiles/file/ginepozebez.pdfIn PDF document text
    • http://johnmarzillier.com/ckfinder/userfiles/files/karafin.pdfIn PDF document text
    • http://www.blackhillsdancecentre.com/wp-content/plugins/formcraft/file-upload/server/content/files/161332c9d1caa8---51082633794.pdfIn PDF document text
    • http://jedzenie365.pl/ckfinder/userfiles/files/87018931564.pdfIn PDF document text
    • https://bya-ingenieria.com/ckfinder/userfiles/files/jowizuzivi.pdfIn PDF document text
    • http://ghefoot.com/fckeditor_userfiles/file/95708353118.pdfIn PDF document text
    • http://caerulumpharma.com/upload/files/39044678866.pdfIn PDF document text
    • http://elliptical-trainers.ru/ckfinder/userfiles/files/poziwikokabobido.pdfIn PDF document text
    • http://julianina.dk/upload/file/41504919247.pdfIn PDF document text
    • http://www.tm-africa.com/beta/public/uploads/cms_filescms_files/puligu.pdfIn PDF document text
    • http://orkoien.com/userfiles/files/lovotatuda.pdfIn PDF document text
    • http://lexprikson.com/admin/style/images/userfiles/file/70244445503.pdfIn PDF document text
    • https://ymvii.com/admin/upload/files/muguzap.pdfIn PDF document text
    • http://webinaris.blog/ckfinder/userfiles/publics/files/76588876579.pdfIn PDF document text
    • https://bluetact.com/locktactyuma/userfiles/file/bajimede.pdfIn PDF document text
    • https://www.natursany.com/ckfinder/userfiles/files/zexafilowitifivopozow.pdfIn PDF document text
    • http://area100impianti.it/userfiles/files/lefemijupegu.pdfIn PDF document text
    • https://wroclaw-effatha.pl/grafiki/file/kagilofadofujuvuvan.pdfIn PDF document text
    • http://studiovalecchi.it/userfiles/files/55544257746.pdfIn PDF document text
    • https://www.lenoir-elec.com/wp-content/plugins/super-forms/uploads/php/files/8033it4u9hpg33ocmeq651v77o/43490312627.pdfIn PDF document text
    • http://www.rlktechniek.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16134d0a7dc831---bovofududa.pdfIn PDF document text
    • http://kwik-it.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1613e7ca6a13ba---damitakipudiwupug.pdfIn PDF document text
    • https://westcoastmovers.ca/wp-content/plugins/super-forms/uploads/php/files/ufoqu5vk8n5uk7400p48p2b3oh/tebizomirekubigenidipel.pdfIn PDF document text
    • http://shop-cartuning.pl/userfiles/file/fufijebowu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3vuEKuznOb8/uplcv?utm_term=vidmate+hd+video+playerPDF 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_off0000df8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF8F 17344 bytes
SHA-256: 44e0852c2ed4d0e76b3472b4316b899058022ec281d63778c6fb63b4932ba7da
font_01_sfnt_off00010c04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C04 10536 bytes
SHA-256: c2bb2f5966f87c4828c5d6a34f9c6c125668d4025d08637611479bba07b5cdb4
font_02_sfnt_off000123ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x123FF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1