Malicious PDF — malware analysis report

Static analysis result for SHA-256 de4fc0ba4fe5f6c8…

MALICIOUS

PDF

95.4 KB Created: 2022-03-25 00:33:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-04
MD5: 94e9836350310448642d383db6ca6bf7 SHA-1: 3417f28ff54e906e7e452612f47173210a8e88ef SHA-256: de4fc0ba4fe5f6c80abdb90e1a38836a0515b6de943b890540777de0b9ef0419
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9873

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
  • 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://norin.co.za/XSRYdR1H?utm_term=nutribullet+pocket+nutritionist PDF link annotation
    • http://knauto.com/upload/file///nujegusomigaga.pdfIn PDF document text
    • http://xn--12ca5eb0atfbad4eh5ai1ef5bg6a8png.com/UserFiles/file/19174870435.pdfIn PDF document text
    • http://dichvuhieuchuan.com/upload/files/5456320279.pdfIn PDF document text
    • https://mapro-spb.ru/img/file/84267677132.pdfIn PDF document text
    • http://tuv-zimer.co.il/assets/userfiles/files/tuvesuderilovadupaxok.pdfIn PDF document text
    • https://retentionstudentexperience.com/wp-content/plugins/formcraft/file-upload/server/content/files/16227e1fb21cd9---99617495264.pdfIn PDF document text
    • http://gdi-fr.com/upload/upload/murodesetazopubezibiw.pdfIn PDF document text
    • http://www.asap-recruitment.net/upload/file/fetewogofikukavapikazape.pdfIn PDF document text
    • http://paymentsbusiness.ca/wp-content/plugins/formcraft/file-upload/server/content/files/162088414db2be---4160293436.pdfIn PDF document text
    • http://veganogle.es/uploads/ckfinder/files/42009839200.pdfIn PDF document text
    • https://maria-galland.ru/files/file/zelope.pdfIn PDF document text
    • http://liveranigioielli.it/userfiles/files/kunetunizajomanu.pdfIn PDF document text
    • http://birdwatching.sk/media/file/letisubegasijonusiwewubuz.pdfIn PDF document text
    • http://everest-c.ru/ckfinder/userfiles/files/muwuwi.pdfIn PDF document text
    • https://ikorti-iao.com/userfiles/files/61927029459.pdfIn PDF document text
    • http://spodne-pradlo-2bpoint.sk/UserFiles/File/65185498595.pdfIn PDF document text
    • http://pflp-sy.org/assets/js/admin/ckeditor/kcfinder/upload/files/sufazopaxawexabij.pdfIn PDF document text
    • http://nbaindia.nic.in/includes/ckeditor/plugins/kcfinder/upload/files/96424034814.pdfIn PDF document text
    • https://ddmmaze.altruistictech.org/documents/img/upload/files/68809985657.pdfIn PDF document text
    • https://coolingrealestate.com/your-home-cleaner/FCKuploads/file/30768662510.pdfIn PDF document text
    • https://vayamcs.com/content_files/files/kivipojesopi.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1621f531893762---49341453591.pdfIn PDF document text
    • https://www.v-investor.ru/kcfinder/upload/files/zetetur.pdfIn PDF document text
    • http://mzch.pl/userfiles/file/rebasofavakigafat.pdfIn PDF document text
    • https://www.ccs-corporation.com/ckfinder/userfiles/files/53496526830.pdfIn PDF document text
    • http://kiajihlava.cz/UserFiles/File/44557111977.pdfIn PDF document text
    • https://schreinerheusi.de/wp-content/plugins/formcraft/file-upload/server/content/files/16200fcaa4497e---55571327010.pdfIn PDF document text
    • https://www.heainc.com/wp-content/plugins/formcraft/file-upload/server/content/files/162329867af0e0---toxerofowo.pdfIn PDF document text
    • https://hyosungulf.com/uploads/file/bijipibonubetipofogidatab.pdfIn PDF document text
    • http://afi-dwls.de/upload/files/sosev.pdfIn PDF document text
    • https://neksav.com/upload/ckfinder/files/10076734203.pdfIn PDF document text
    • http://cartopack.be/Images/file/97993493355.pdfIn PDF document text
    • https://zohukum.com/ckfinder/userfiles/files/93391023424.pdfIn PDF document text
    • http://znsedu.net/admin/ckeditor/kcfinder/upload/files/bakinafivutenijada.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_off00011413.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00011413.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011413.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11413 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off00012b33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B33 10516 bytes
SHA-256: 6bf4f3f82b7ddf1cc8e743884e10b1b49f1a2790d1a9c78f16d16213e40ff994
font_02_sfnt_off00014308.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14308 16872 bytes
SHA-256: 75c0b2d1d85b4440ab6d6434ce8a849dc3182649d7f470549d5a639c09c05c21