Malicious PDF — malware analysis report

Static analysis result for SHA-256 72b4afe9f1fd754d…

MALICIOUS

PDF

262.5 KB Created: 2022-02-22 11:07:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-28
MD5: 5c078b05d90a89df31abf2d5667fcdc8 SHA-1: caa56b09782ff7b27975087d19694727dddb1f89 SHA-256: 72b4afe9f1fd754d58b0a797790e2e3740b3c066cd7fe763e13fdba8a33b45c8
174 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9614

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://wirut.co.za/XSRYdR1H?utm_term=guar+seed+latest+report PDF link annotation
    • https://pod-jaskolka.pl/files/files/tefixado.pdfIn PDF document text
    • http://circuitvietnamcambodge.com/hinhanh/file/tuvudiwasigo.pdfIn PDF document text
    • https://whereestar.com/marinarubicon/admin/file/54738672020.pdfIn PDF document text
    • https://mintowncoffee.net/uploads/images/files/18205673822.pdfIn PDF document text
    • http://www.nandomoraes.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/161b7ebbac001c---95341862728.pdfIn PDF document text
    • http://fruitvita.com/files/files/mukugofulifewaterikira.pdfIn PDF document text
    • https://cfacgroup.com/uploads/FCK_files/file/zutesenulel.pdfIn PDF document text
    • http://etecpresidentevenceslau.com.br/kcfinder/upload/files/ripixaluzosub.pdfIn PDF document text
    • http://www.darvidproperty.com/news/file/xizivowonuxasevijapimiv.pdfIn PDF document text
    • https://nsck-cykelmotion.dk/ckfinder/userfiles/files/zezebuxogokedasedu.pdfIn PDF document text
    • http://yoga-privates.com/yoga-privates/file/20798216571.pdfIn PDF document text
    • https://www.aatae.pt/backoffice/assets/js/kcfinder/upload/files/zojirudaxejopilazudataw.pdfIn PDF document text
    • http://furkansigorta.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/16145e53e123bc---14858926354.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1611396627ddea---mozefemunoberimiperukevax.pdfIn PDF document text
    • http://www.niziointerior.pl/upload/file/lupozu.pdfIn PDF document text
    • http://legrand-etika.su/kcfinder/upload/files/73797111757.pdfIn PDF document text
    • https://colakcivi.com/userfiles/file/14183728705.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_off0003b0f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3B0F8 17232 bytes
SHA-256: a1ad0f728a1a547e5336af9b9aed0a6bbbb3ab4e43ae4b2af0ceed111c1f4e1b
font_01_sfnt_off0003dddf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3DDDF 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off0003f4ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3F4FF 10328 bytes
SHA-256: d110a2742895c3707db41a7a863d3059233c7a496a256ddeefbe85e5cb966069

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