Malicious PDF — malware analysis report

Static analysis result for SHA-256 de4bf391b23b9b66…

MALICIOUS

PDF

290.3 KB Created: 2022-02-16 01:00:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-03
MD5: bc31cd12d8d700560019697a0be09213 SHA-1: e8b0c59abc9946eaa6381447b40d57f56dedaa6e SHA-256: de4bf391b23b9b665b3a1963ea3b882ff66841483b655edfe66ae9d34b57cfde
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6928

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 http://sarahscupcakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/1620c19c2bf0a6---jameweba.pdf In PDF document text
    • http://kocavietnam.com/upload/files/xuwerabalojowejot.pdfIn PDF document text
    • https://oncetrabzon.com/resimler/files/54903411662.pdfIn PDF document text
    • http://www.eventoptik.de/upload/files/fulugupanukidor.pdfIn PDF document text
    • http://daming-school.com/userfiles/file/luxoje.pdfIn PDF document text
    • http://propertiesforrent.com/userfiles/file///55789512042.pdfIn PDF document text
    • http://enjoyisagenix.com/ckfinder/userfiles/files/xapugofuwofezemar.pdfIn PDF document text
    • http://pnmanagementsolutions.in/uploads/89696506173.pdfIn PDF document text
    • https://ctapigroup3.com/contents/files/labokapi.pdfIn PDF document text
    • http://www.musicmaestrodiscos.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1610d8bfa329c3---madazirawikademirus.pdfIn PDF document text
    • http://heydarbaba.org/resimler/files/zubalaxenu.pdfIn PDF document text
    • https://myoffice.strategygroupglobal.com/uploads/files/49850807490.pdfIn PDF document text
    • https://ankaratutuncu.com/panel/kcfinder/upload/files/94695669021.pdfIn PDF document text
    • http://www.oschouston.com/osc/wp-content/plugins/formcraft/file-upload/server/content/files/16111ac4452fb5---pabogatu.pdfIn PDF document text
    • https://www.au-holding.ru/kcfinder/upload/files/31882916048.pdfIn PDF document text
    • http://daiduongmetal.com/uploads/ckfinder/files/50120831100.pdfIn PDF document text
    • http://mdcegy.com/app/webroot/img/fck/file/53491201844.pdfIn PDF document text
    • http://giprozdraw.ru/ckfinder/userfiles/files/ruweruvositojagebizumekep.pdfIn PDF document text
    • http://thesprotia.gr/uploads/file/34227608278.pdfIn PDF document text
    • http://terhautz.com/upload_files/files/63500030405.pdfIn PDF document text
    • https://pastijptoto.com/contents/files/marosofogij.pdfIn PDF document text
    • http://kozelsk-adm.ru/files/uploads/files/27093402474.pdfIn PDF document text
    • http://tongchangkj.com/uploadfile/file///2021082504270015.pdfIn PDF document text
    • https://veglifekc.org/wp-content/plugins/super-forms/uploads/php/files//30814007506.pdfIn PDF document text
    • http://a-pluset.com/userfiles/xiniredel.pdfIn PDF document text
    • https://stpetejazz.com/wp-content/plugins/super-forms/uploads/php/files/03gnqa7748t362vfncctc0u0vh/70174608755.pdfIn PDF document text
    • http://www.saito-ken.jp/userdata/file/wivun.pdfIn PDF document text
    • http://teamwork-poetschke.com/ckfinder/userfiles/files/1915224613.pdfIn PDF document text
    • https://auto826.com/uploads/files/xepumutonejadukefibirimeg.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16209e8e931ce9---karobexegaduj.pdfIn PDF document text
    • http://anchor-m.com/js/upload/files/73446610537.pdfIn PDF document text
    • http://euro-service.org/kcfinder/upload/images/60671183286.pdfIn PDF document text
    • http://qdjshg.com/files/file/70142734178.pdfIn PDF document text
    • https://yubit.co.za/XSRYdR1H?utm_term=prefisso+percorso+imap+alice+mail+androidPDF link annotation
    • https://gulfb2b.com/userfiles/file/jimebevikijoluzam.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_off00041c8a.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00041c8a.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00041c8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x41C8A 17616 bytes
SHA-256: 0db03bc1c5a64965b86f55d2e89925be57addbbe80cf99823bbc0df57dfa0ea4
font_01_sfnt_off00044a75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x44A75 10684 bytes
SHA-256: 46243b23797cdc269a84087995564b2c76ad08aaff5db521718b2fe172949623
font_02_sfnt_off000462e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x462E6 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9