Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0cb23c09856bf4e…

MALICIOUS

PDF

300.2 KB Created: 2022-03-18 09:56:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-02
MD5: 28443be4bba0a413bb3888e16bf93844 SHA-1: d80280b63bd2a30c423751586a1357caea00519a SHA-256: c0cb23c09856bf4e4750d13b71454d83985da03b86f6b9dfe8158c7c42ed2c95
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7177

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://yoyep.co.za/XSRYdR1H?utm_term=employer+grievance+form PDF link annotation
    • http://povprojekt.cz/upload/files/rewufeza.pdfIn PDF document text
    • https://tastysnacks1.com/nbloom/fckuploads/file/6542998188.pdfIn PDF document text
    • https://ibericadearmerias.com/file/sotibizesowavivo.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/161fa2fc5636f5---74634902285.pdfIn PDF document text
    • http://topmebli.com/content/xuploadimages/file/25574845674.pdfIn PDF document text
    • http://mdtrend.hu/files/file/70720719374.pdfIn PDF document text
    • https://alkalacarservice.com/public_html/userfiles/file/xegagezobufiduraroda.pdfIn PDF document text
    • https://mimzyonline.com/userfiles/file/95835036287.pdfIn PDF document text
    • http://gymostrov.org/gymostrov/userfiles/file/rutemuruzam.pdfIn PDF document text
    • http://serviskytar.cz/kcfinder/upload/files/34863108582.pdfIn PDF document text
    • http://anpo.vn/upload/files/83977052980.pdfIn PDF document text
    • http://xn--elementy-zczne-kwb98g.pl/media/file/23655691686.pdfIn PDF document text
    • https://gmonlinestore.com/wp-content/plugins/formcraft/file-upload/server/content/files/16232bd1462dc0---fanakefulesujowanorif.pdfIn PDF document text
    • http://express-service-auto.fr/ckeditor/ckfinder/userfiles/files/kegaxapu.pdfIn PDF document text
    • https://beyondmywalls.com/data/files/rudako.pdfIn PDF document text
    • https://www.colegiodesafio.net/home/wp-content/plugins/formcraft/file-upload/server/content/files/162036ae068e8f---sijerogixakani.pdfIn PDF document text
    • http://dongtienlamnghiep.com/upload/file/72702520423.pdfIn PDF document text
    • http://bftt.marketsearching.com/upload/files/65230619057.pdfIn PDF document text
    • https://na-nule.ru/wp-content/plugins/super-forms/uploads/php/files/lgahl4912jko47haijlm460i2b/44992506208.pdfIn PDF document text
    • https://pratham.one/file/65148332863.pdfIn PDF document text
    • https://www.grecosalesinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/16208e9d49685b---fotixinuzakuxo.pdfIn PDF document text
    • http://learnersdigest.org/userfiles/file/39954811878.pdfIn PDF document text
    • http://xn--9d0bk1sn6gncq95flql.com/user_data/kcfinder/files/9708128466.pdfIn PDF document text
    • https://nanyangtextile.com/userfiles/file/67031907512.pdfIn PDF document text
    • http://anexbd.com/assets/ckeditor/kcfinder/upload/files/lelivivoferaratujexu.pdfIn PDF document text
    • http://prunay-en-yvelines.fr/ckfinder/userfiles/files/41628861405.pdfIn PDF document text
    • https://eravukappalpalli.com/userfiles/file/gebesiduwisuwosofefikibam.pdfIn PDF document text
    • http://royal-pizza.eu/files/file/punogo.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_off00044a78.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00044a78.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00044a78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x44A78 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off00046198.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x46198 10720 bytes
SHA-256: aa2295239c838404fa520f4ec86e15d78274e77b401e63319e2b89cc6ff870f1
font_02_sfnt_off00047a2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x47A2D 15552 bytes
SHA-256: 2bea4b21121c4125403a8668913396d3f1d7a26c7f624ea630355eb9f3998bda