Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ddc8072cb31fe8b…

MALICIOUS

PDF

539.5 KB Created: 2022-02-27 08:53:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-26
MD5: 255a253bdf24ee722a14e0e64c0581d4 SHA-1: a15d35fb1b944c86d9d0c5c05febedcaa349c09d SHA-256: 3ddc8072cb31fe8bad1d208438c83413504973cd2a590df9a411bae95be9a81b
144 Risk Score

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4230

Heuristics 7

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://loheb.co.za/XSRYdR1H?utm_term=gujarat+university+bcom+sem+3+books+pdf PDF link annotation
    • http://www.ortodonciaelisafarache.com/ckfinder/userfiles/files/2588462164.pdfIn PDF document text
    • http://d-a-s.cn/userfiles/file/29870218498.pdfIn PDF document text
    • https://legacytwirlers.cornerfamily.com/userfiles/files/71639715373.pdfIn PDF document text
    • http://jedzenie365.pl/ckfinder/userfiles/files/tuxumegonuxarexatidop.pdfIn PDF document text
    • https://www.agnii.gov.in/kcfinder/upload/files/solalavexelapanibowisu.pdfIn PDF document text
    • http://ncteonline.com/userfiles/file/tisitu.pdfIn PDF document text
    • http://archiwum.wyryki.eu/admin/ckfinder/userfiles/files/59182121344.pdfIn PDF document text
    • https://mecaniquekd.ca/upload/file/85035497078.pdfIn PDF document text
    • http://kohaz.hu/files/file/nijeweru.pdfIn PDF document text
    • http://jvcc.cn/ckfinder/userfiles/files/220207023437539578wkf0r.pdfIn PDF document text
    • http://edu-soft.ru/site/htmlimages/file/retadugeganiloripufap.pdfIn PDF document text
    • http://lamelove-zakryti.cz/userfiles/file/zusokorogowas.pdfIn PDF document text
    • https://santchavarabed.in/ckfinder/userfiles/files/73389348030.pdfIn PDF document text
    • http://www.guidanceias.com/assets/files/plugins/kcfinder/upload/files/mibalisodanenifofolexos.pdfIn PDF document text
    • http://triatlonbizuterie.cz/sites/default/files/file/kikozimojewamezid.pdfIn PDF document text
    • http://akiyastyle.com/app/webroot/js/ckfinder/userfiles/files/kawikateta.pdfIn PDF document text
    • http://nm-union.ru/ckfinder/userfiles/files/vinujuxajowu.pdfIn PDF document text
    • http://seattleteriyaki3.com/uploads/files/wunikiwusubufazenibe.pdfIn PDF document text
    • http://pbwi.com.pl/admin/kcfinder/upload/files/2014379397.pdfIn PDF document text
    • http://cyc-catering.pe/disac/userfiles/file/vejakenosobivazovete.pdfIn PDF document text
    • http://ithaca1966.com/clients/8/85/85e9e0a76fddb83d7689cebc6ab07fae/File/22324439710.pdfIn PDF document text
    • http://zeci.nl/im/image/malezajewas.pdfIn PDF document text
    • http://www.lalorraineperdue.com/documents/sazezonetisolenopuvafipog.pdfIn PDF document text
    • http://dar-tom.pl/userfiles/file/buman.pdfIn PDF document text
    • http://www.psstrecno.sk/wp-content/plugins/formcraft/file-upload/server/content/files/161c38e12556dd---tazagab.pdfIn PDF document text
    • http://renknh.com/ckupload/files/jufemumuzafufuvonetaki.pdfIn PDF document text
    • https://ecef-groupe.com/wp-content/plugins/super-forms/uploads/php/files/1dphdqbbd6q582pbnmi0tt57i5/belufulizatew.pdfIn PDF document text
    • https://schilderlesvakantie.nl/ckfinder/userfiles/files/71290290216.pdfIn PDF document text
    • https://www.larche-de-jules.fr/ckfinder/userfiles/files/6282117017.pdfIn PDF document text
    • https://suhrsmad.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1611af2797f38d---21291258318.pdfIn PDF document text
    • https://kaimano.it/file/lezasi.pdfIn PDF document text
    • https://unixsensor.com/uploads/files/202111260659083751.pdfIn PDF document text
    • http://www.nanodrywash.com/wp-content/plugins/formcraft/file-upload/server/content/files/1616a701eb1598---20617405551.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_off0007f7e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F7E3 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off00080efe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80EFE 19424 bytes
SHA-256: 3a445a1022df62bb86ca694502d9887067c6f233ac2d0c30fae6e187df5968d8
font_02_sfnt_off000842b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x842B0 11588 bytes
SHA-256: 6ad23a1dd026f732b7151bf3a22c3c1434ec555a491c7488b5fc29541b2e1ed8