Malicious PDF — malware analysis report

Static analysis result for SHA-256 782b40c016c2681f…

MALICIOUS

PDF

290.7 KB Created: 2021-12-30 19:48:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-16
MD5: 94f05bcbc18683e4b7e638c54f610eda SHA-1: 13727194e6aaf1880576485f653c2daec79a0ff1 SHA-256: 782b40c016c2681f2d5dc8ad53b48b5bbc11a88fe07092f617db52b63b7082ec
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7928

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://dazhonghua1688.com/ckfinder/userfiles/files/vigixe.pdf In PDF document text
    • https://wojczak.pl/userfiles/file/puwalasazekib.pdfIn PDF document text
    • https://www.foodprocessingprojects.com/admin_assets/ckeditor/kcfinder/upload/files/wowibotusowesogaxuwoli.pdfIn PDF document text
    • http://appartenvue.net/appart/upload/images/75538628607.pdfIn PDF document text
    • http://105chers.netsociality.com/upload/files/soligolizibuxijar.pdfIn PDF document text
    • https://elnativocoffee.com/silver/upload/files/61404333785.pdfIn PDF document text
    • https://reitinguok.lt/userfiles/file/nimuzepexugofofuxeviwalat.pdfIn PDF document text
    • https://webmanagement.gizicsarda.ro/images/file/97832887523.pdfIn PDF document text
    • http://mybyblos.com/userfiles/file/duguso.pdfIn PDF document text
    • https://sakitonus.ru/wp-content/plugins/super-forms/uploads/php/files/38ae2067a8f6fa272ebdac4e55724f96/bolumosuwen.pdfIn PDF document text
    • https://4wheelchile.cl/admin/uploads/file/36990227832.pdfIn PDF document text
    • https://hongming-eco.com/userfiles/file/40510540467.pdfIn PDF document text
    • http://yanlixin.com/UserFiles/file///vazidetupixetomerivufira.pdfIn PDF document text
    • https://dadesigning.com/daduserfiles/files/farejizekibamidaz.pdfIn PDF document text
    • https://autosaloncenter.com/uploads/file/ligevipufetonole.pdfIn PDF document text
    • http://www.hj-bouwt.be/wp-content/plugins/formcraft/file-upload/server/content/files/161987ff32e888---ropodevefuvominal.pdfIn PDF document text
    • https://aitalk.vn/upload/files/vojupizodi.pdfIn PDF document text
    • http://woonhuislift.info/wp-content/plugins/formcraft/file-upload/server/content/files/1619a1576270f4---32351348274.pdfIn PDF document text
    • https://harley.dataroom.tw/upload/files/fudozoketejam.pdfIn PDF document text
    • https://tvsporedi.si/vsebina/tibemojitutu.pdfIn PDF document text
    • http://sinoscaform.com/upload/ckimg/files/202112141200337127.pdfIn PDF document text
    • http://feedproxy.google.com/~r/MbOu/~3/D9plVHj2VOU/uplcv?utm_term=microsoft+bluetooth+driver++windows+8.+1PDF 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_off0004191b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4191B 19028 bytes
SHA-256: 9e1b406ca9990cdd653b9927276293fdf58a0cab58d6326de83217b3939db5e2
font_01_sfnt_off00044b15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x44B15 11124 bytes
SHA-256: be1cca12d93cfd2acf1da0c7ce144869f0cb0ea2bb4ca1cb98c1f27d7b9a4af4
font_02_sfnt_off00046519.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x46519 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336

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