Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3e8ce371441221a…

MALICIOUS

PDF

269.5 KB Created: 2022-01-13 03:14:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-21
MD5: 72f5ea8f827fe0b16afddf207f24ab68 SHA-1: 882ef354a178b2ab2b0d1d1f049df40bf643f1b2 SHA-256: d3e8ce371441221a9fee070a16c46b44a0cfc57a2fd4275304ad75cc87349f16
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7309

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://www.clinicaepilepsia.cl/ckfinder/userfiles/files/19673038355.pdf In PDF document text
    • http://smalternatywa.pl/media/upload/files/d469ef32e5f4c2c7bafcb3fc45d5dfc2.pdfIn PDF document text
    • https://impariant-club.ru/wp-content/plugins/super-forms/uploads/php/files/b97090c7158db599010502d8ab8a3f5f/68477972580.pdfIn PDF document text
    • https://natatourism.com/userfiles/files/46129095428.pdfIn PDF document text
    • http://lovesenergy.com/file/pojodawe.pdfIn PDF document text
    • http://sapthagireesyathra.srikarpagavinayagamills.com/userfiles/file/35152904793.pdfIn PDF document text
    • https://hram-uspeniya.ru/ckfinder/userfiles/files/23938206488.pdfIn PDF document text
    • https://www.cbrn.tj/nrsa_system/ckeditor/kcfinder/upload/files/81831754133.pdfIn PDF document text
    • http://lamardaegu.com/upfile/user/file/7528893196.pdfIn PDF document text
    • https://clinicaalcantara.es/sites/default/files/userfiles/file/2107903352.pdfIn PDF document text
    • https://www.lorenzofranzone.it/wp-content/plugins/super-forms/uploads/php/files/760cca67a3228e4852e01b6ab47206ba/8425845941.pdfIn PDF document text
    • https://tectrongim.com/uploads/file/torusekoxefovejomaf.pdfIn PDF document text
    • http://abbaorphancare.org/survey/userfiles/files/65428164124.pdfIn PDF document text
    • https://siyata.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/1613448e65ee84---26459246379.pdfIn PDF document text
    • https://alkathirilaw.com/userfiles/files/50876974431.pdfIn PDF document text
    • https://tectrongim.com/uploads/files/12105722239.pdfIn PDF document text
    • http://mamolenasnc.it/userfiles/files/gazegudowij.pdfIn PDF document text
    • https://samirkumarpaul.com/ckfinder/userfiles/files/45035079580.pdfIn PDF document text
    • http://uptownchantilly.com/uploads/files/danuxilemimozupev.pdfIn PDF document text
    • https://verticala.ro/images/userfiles/91856548338.pdfIn PDF document text
    • http://sedaciesupravy.sk/media/file/47793875165.pdfIn PDF document text
    • https://dla-pracownika.pl/pliki_user/File/45062786239.pdfIn PDF document text
    • https://loctra.net/userfiles/file/48304120961.pdfIn PDF document text
    • https://cgb-echafaudage.fr/upload/files/vemawotokir.pdfIn PDF document text
    • https://fkip.unsam.ac.id/kcfinder/upload/files/29907996205.pdfIn PDF document text
    • http://feedproxy.google.com/~r/MbOu/~3/BcFPVxLj4jw/uplcv?utm_term=funza+lushaka+application+form+2018+pdfPDF 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_off0003c88c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3C88C 17204 bytes
SHA-256: fb53f527d9f2fe2b5d295f220ff330e31e1c263e498ba977cb9dbecf128e09a3
font_01_sfnt_off0003f523.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3F523 11484 bytes
SHA-256: d086fbe848b3d6e7c55cd500f168e95132a8b18e24f77086ebc3681b051a4a1b
font_02_sfnt_off00041030.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x41030 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336